diff --git a/.idea/copyright/LICENSE.xml b/.idea/copyright/LICENSE.xml
new file mode 100644
index 000000000..b9e0ac3d2
--- /dev/null
+++ b/.idea/copyright/LICENSE.xml
@@ -0,0 +1,6 @@
+<component name="CopyrightManager">
+  <copyright>
+    <option name="notice" value="Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details." />
+    <option name="myName" value="LICENSE" />
+  </copyright>
+</component>
\ No newline at end of file
diff --git a/.idea/copyright/profiles_settings.xml b/.idea/copyright/profiles_settings.xml
new file mode 100644
index 000000000..d7689e958
--- /dev/null
+++ b/.idea/copyright/profiles_settings.xml
@@ -0,0 +1,3 @@
+<component name="CopyrightManager">
+  <settings default="LICENSE" />
+</component>
\ No newline at end of file
diff --git a/AUTHORS b/AUTHORS
index 9c6461d51..8fb2370e9 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,11 +1,7 @@
-# This is the list of significant contributors to DAVx5.
-#
-# This does not necessarily list everyone who has contributed work.
-# To see the full list of contributors, see the revision history in
-# source control.
+You can view the list of people who have contributed to the code base in the version control history:
+https://github.com/bitfireAT/davx5-ose/graphs/contributors
 
-Ricki Hirner (bitfire.at)
-Bernhard Stockmann (bitfire.at)
+Translators are not mentioned in the history explicitly.
+The list of translators can be found in the About screen.
 
-Sunik Kupfer (bitfire.at)
-Patrick Lang (techbee.at)
+Every contribution is welcome. There are many other forms of contributing besides writing code!
diff --git a/app/src/androidTest/kotlin/at/bitfire/davdroid/Dav4jvm.kt b/app/src/androidTest/kotlin/at/bitfire/davdroid/Dav4jvm.kt
index 6637950de..2f001282f 100644
--- a/app/src/androidTest/kotlin/at/bitfire/davdroid/Dav4jvm.kt
+++ b/app/src/androidTest/kotlin/at/bitfire/davdroid/Dav4jvm.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid
 
diff --git a/app/src/androidTest/kotlin/at/bitfire/davdroid/TestModules.kt b/app/src/androidTest/kotlin/at/bitfire/davdroid/TestModules.kt
index 7913da040..5f96cc89f 100644
--- a/app/src/androidTest/kotlin/at/bitfire/davdroid/TestModules.kt
+++ b/app/src/androidTest/kotlin/at/bitfire/davdroid/TestModules.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid
 
 import at.bitfire.davdroid.push.PushRegistrationWorkerManager
diff --git a/app/src/androidTest/kotlin/at/bitfire/davdroid/repository/DavCollectionRepositoryTest.kt b/app/src/androidTest/kotlin/at/bitfire/davdroid/repository/DavCollectionRepositoryTest.kt
index 09a06e3de..7d8ae9f8a 100644
--- a/app/src/androidTest/kotlin/at/bitfire/davdroid/repository/DavCollectionRepositoryTest.kt
+++ b/app/src/androidTest/kotlin/at/bitfire/davdroid/repository/DavCollectionRepositoryTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.repository
 
 import android.content.Context
diff --git a/app/src/androidTest/kotlin/at/bitfire/davdroid/resource/LocalAddressBookStoreTest.kt b/app/src/androidTest/kotlin/at/bitfire/davdroid/resource/LocalAddressBookStoreTest.kt
index d23f22d4c..4ac98ce97 100644
--- a/app/src/androidTest/kotlin/at/bitfire/davdroid/resource/LocalAddressBookStoreTest.kt
+++ b/app/src/androidTest/kotlin/at/bitfire/davdroid/resource/LocalAddressBookStoreTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.resource
 
 import android.accounts.Account
diff --git a/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorkerTest.kt b/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorkerTest.kt
index bdd80ff68..5e55b5ea4 100644
--- a/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorkerTest.kt
+++ b/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorkerTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.sync.account
 
 import android.accounts.Account
diff --git a/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/TestAccount.kt b/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/TestAccount.kt
index 58fe2d2c9..91490e83b 100644
--- a/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/TestAccount.kt
+++ b/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/account/TestAccount.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 package at.bitfire.davdroid.sync.account
 
 import android.accounts.Account
diff --git a/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorkerTest.kt b/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorkerTest.kt
index 63200307f..65b885727 100644
--- a/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorkerTest.kt
+++ b/app/src/androidTest/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorkerTest.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.sync.worker
 
diff --git a/app/src/androidTest/res/values/strings.xml b/app/src/androidTest/res/values/strings.xml
index 75c07e1a5..95b8d4966 100644
--- a/app/src/androidTest/res/values/strings.xml
+++ b/app/src/androidTest/res/values/strings.xml
@@ -1,12 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (c) Ricki Hirner (bitfire web engineering).
-  ~ All rights reserved. This program and the accompanying materials
-  ~ are made available under the terms of the GNU Public License v3.0
-  ~ which accompanies this distribution, and is available at
-  ~ http://www.gnu.org/licenses/gpl.html
-  -->
-
 <resources>
 
     <string name="app_name">Davx5Test</string>
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/network/GoogleLogin.kt b/app/src/main/kotlin/at/bitfire/davdroid/network/GoogleLogin.kt
index 483d99bf6..8583f426f 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/network/GoogleLogin.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/network/GoogleLogin.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.network
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/network/NextcloudLoginFlow.kt b/app/src/main/kotlin/at/bitfire/davdroid/network/NextcloudLoginFlow.kt
index bd21a7011..8186b6953 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/network/NextcloudLoginFlow.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/network/NextcloudLoginFlow.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.network
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/push/PushNotificationManager.kt b/app/src/main/kotlin/at/bitfire/davdroid/push/PushNotificationManager.kt
index 593dbdd28..bfe8ecb6e 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/push/PushNotificationManager.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/push/PushNotificationManager.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.push
 
 import android.accounts.Account
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/startup/CrashHandlerSetup.kt b/app/src/main/kotlin/at/bitfire/davdroid/startup/CrashHandlerSetup.kt
index fa6aa7772..643f1aa8a 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/startup/CrashHandlerSetup.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/startup/CrashHandlerSetup.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.startup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncAdapterServices.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncAdapterServices.kt
index 25ccf0769..ad1b1792e 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncAdapterServices.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncAdapterServices.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.sync
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncFrameworkIntegration.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncFrameworkIntegration.kt
index 401d8edd5..277e90e66 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncFrameworkIntegration.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncFrameworkIntegration.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.sync
 
 import android.accounts.Account
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncResult.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncResult.kt
index 2240d2fcc..efdd5ee10 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncResult.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/SyncResult.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.sync
 
 /**
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountAuthenticatorService.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountAuthenticatorService.kt
index 5a34e2045..ca7b57ec2 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountAuthenticatorService.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountAuthenticatorService.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 package at.bitfire.davdroid.sync.account
 
 import android.accounts.AbstractAccountAuthenticator
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorker.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorker.kt
index a0b0137f9..5278237e5 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorker.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AccountsCleanupWorker.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.sync.account
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AddressBookAuthenticatorService.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AddressBookAuthenticatorService.kt
index 7eb39f42d..245275d41 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AddressBookAuthenticatorService.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/AddressBookAuthenticatorService.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 package at.bitfire.davdroid.sync.account
 
 import android.accounts.AbstractAccountAuthenticator
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/SystemAccountUtils.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/SystemAccountUtils.kt
index 4f903b5b7..b3bd56741 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/account/SystemAccountUtils.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/account/SystemAccountUtils.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.sync.account
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/BaseSyncWorker.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/BaseSyncWorker.kt
index 45bce8d4c..dd3f27d90 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/BaseSyncWorker.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/BaseSyncWorker.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.sync.worker
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/OneTimeSyncWorker.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/OneTimeSyncWorker.kt
index af4bb7f60..a8a6b619f 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/OneTimeSyncWorker.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/OneTimeSyncWorker.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.sync.worker
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorker.kt b/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorker.kt
index 4a0238dce..072f7bec6 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorker.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/sync/worker/PeriodicSyncWorker.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.sync.worker
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsModel.kt
index 309a7dc78..dc718ac99 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.accounts.Account
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsScreen.kt
index 2b0e878f2..e0ec50d83 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/AccountsScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.Manifest
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsModel.kt
index 1168e23ed..73551c2e6 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.content.Context
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsScreen.kt
index 372f09ea4..9604f48ec 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.annotation.SuppressLint
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/DebugInfoScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/DebugInfoScreen.kt
index 10af67cae..e45504060 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/DebugInfoScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/DebugInfoScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.accounts.Account
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsModel.kt
index c681e2de6..464554cbf 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.content.Context
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsScreen.kt
index 52e23faae..6ac2d82eb 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/PermissionsScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.Manifest
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksModel.kt
index 0e075450b..356e7691f 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.content.Context
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksScreen.kt
index 38153b847..da537402f 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/TasksScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui
 
 import android.content.Intent
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountScreen.kt
index c3ffe56c8..6d62f20dc 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 
 import android.Manifest
 import android.accounts.Account
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsModel.kt
index 7a8e12585..ebb0935c8 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.account
 
 import android.accounts.Account
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsScreen.kt
index dc9e54b4b..9e277cefd 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/AccountSettingsScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.account
 
 import android.accounts.Account
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsModel.kt
index 70b2a0761..cd3ff015d 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.account
 
 import android.content.Context
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsScreen.kt
index 729afd815..5dfe33c62 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/account/WifiPermissionsScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.account
 
 import android.Manifest
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/ProgressBar.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/ProgressBar.kt
index 7aa65ac9f..a4522056e 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/ProgressBar.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/ProgressBar.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.composable
 
 import androidx.compose.material3.LinearProgressIndicator
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/SelectClientCertificateCard.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/SelectClientCertificateCard.kt
index d8ba75055..11d438dd5 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/SelectClientCertificateCard.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/composable/SelectClientCertificateCard.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.composable
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageContent.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageContent.kt
index 95eec124e..39f4c5efa 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageContent.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageContent.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.intro
 
 import android.os.Build
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageModel.kt
index 8df7e93ff..3bb500d3a 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BatteryOptimizationsPageModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.intro
 
 import android.content.Context
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroModel.kt
index 3fc9a1d54..b2ec1a64e 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroModel.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.intro
 
 import androidx.lifecycle.ViewModel
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroScreen.kt
index 4d4137a0f..ec159b2e7 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/intro/IntroScreen.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.ui.intro
 
 import androidx.compose.animation.AnimatedContent
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/AdvancedLoginModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/AdvancedLoginModel.kt
index fd277c60f..af128f13b 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/AdvancedLoginModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/AdvancedLoginModel.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/EmailLoginModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/EmailLoginModel.kt
index 46ed8bd65..56ae2cfde 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/EmailLoginModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/EmailLoginModel.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/GoogleLoginModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/GoogleLoginModel.kt
index 65029a2b6..9315c3343 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/GoogleLoginModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/GoogleLoginModel.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginDetailsPage.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginDetailsPage.kt
index b5bae3940..6cf99f81f 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginDetailsPage.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginDetailsPage.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreen.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreen.kt
index e3ce5c4d8..3064adc4d 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreen.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreen.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreenModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreenModel.kt
index 506dca0af..efad87962 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreenModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginScreenModel.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginTypePage.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginTypePage.kt
index 18dc9e357..1d5dcfbbf 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginTypePage.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/LoginTypePage.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/NextcloudLoginModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/NextcloudLoginModel.kt
index 39f1599a8..684a61cbb 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/NextcloudLoginModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/NextcloudLoginModel.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/UrlLoginModel.kt b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/UrlLoginModel.kt
index 6b67dd62e..5777e0cf6 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/UrlLoginModel.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/ui/setup/UrlLoginModel.kt
@@ -1,6 +1,6 @@
-/***************************************************************************************************
+/*
  * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
- **************************************************************************************************/
+ */
 
 package at.bitfire.davdroid.ui.setup
 
diff --git a/app/src/main/kotlin/at/bitfire/davdroid/util/BroadcastReceiverFlow.kt b/app/src/main/kotlin/at/bitfire/davdroid/util/BroadcastReceiverFlow.kt
index aff436813..1f38c4464 100644
--- a/app/src/main/kotlin/at/bitfire/davdroid/util/BroadcastReceiverFlow.kt
+++ b/app/src/main/kotlin/at/bitfire/davdroid/util/BroadcastReceiverFlow.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
 package at.bitfire.davdroid.util
 
 import android.annotation.SuppressLint
diff --git a/app/src/main/res/xml/sync_prefs.xml b/app/src/main/res/xml/sync_prefs.xml
index f9d2b2eb4..2e6e5eb18 100644
--- a/app/src/main/res/xml/sync_prefs.xml
+++ b/app/src/main/res/xml/sync_prefs.xml
@@ -1,12 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (c) Ricki Hirner (bitfire web engineering).
-  ~ All rights reserved. This program and the accompanying materials
-  ~ are made available under the terms of the GNU Public License v3.0
-  ~ which accompanies this distribution, and is available at
-  ~ http://www.gnu.org/licenses/gpl.html
-  -->
-
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
 
     <PreferenceCategory android:title="@string/account_prefs_use_app"/>