Add QToolButton + QMenu styles. Fixes #1464

qt/windows_dark.qss

@@ -138,7 +138,7 @@ QDialog QWidget::QLineEdit
 
 /* Buttons and combo boxes */
 
-QPushButton
+QPushButton, QToolButton
 {
     padding: 3px;
     background-color: #404040;
@@ -146,6 +146,23 @@ QPushButton
     color: white;
 }
 
+QToolButton:hover
+{
+    background-color: #454545;
+}
+
+QMenu
+{
+    background-color: #404040;
+    border: 1px solid #2e2e2e;
+    color: white;
+}
+
+QMenu::item:selected
+{
+    background-color: #454545;
+}
+
 QComboBox
 {
     padding: 1px;