Merge branch 'ci-update' into 'master'

Update CI image and build-tools to 25.0.2

See merge request !427

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: fdroid/ci:client-20161023
+image: fdroid/ci:client-20161223
 
 cache:
   paths:

app/build.gradle

@@ -155,7 +155,7 @@ if (!hasProperty('sourceDeps')) {
 
 android {
     compileSdkVersion 24
-    buildToolsVersion '25.0.0'
+    buildToolsVersion '25.0.2'
     useLibrary 'org.apache.http.legacy'
 
     buildTypes {

extern/support-v4-preferencefragment/build.gradle

@@ -19,7 +19,7 @@ dependencies {
 
 android {
     compileSdkVersion 19
-    buildToolsVersion '25.0.0'
+    buildToolsVersion '25.0.2'
 
     defaultConfig {
         minSdkVersion 7