Android Studio Beta: Update gradle plugin version
Android Beta: Remove `.idea` directory
Android Studio Beta: Update AndroidManifest files for new merge
Merge branch 'devel/android' into android/studio-beta

Conflicts:
	gradle/android/src/lite/AndroidManifest.xml
	gradle/gradle/wrapper/gradle-wrapper.properties
Merge branch 'android/studio-beta' into issue/178-contextual-action-bar
Issue #178: Refactor reused code from `testMarkAll()` to  `markAll()`
Android Studio Beta: Fix Lite's manifest
Merge branch 'android/studio-beta' into issue/178-contextual-action-bar
Issue #178: Refactor repeated code to `deleteCard()`