Updates to the .gitignore

Cleaned up AndroidManifest files which allowed me to delete the String.xml files. (Added copyright block where needed)
Renamed and added runConfigurations for testing.
Added test suite for the answers_provider. (100% coverage)
Converted answers_provider to use constructor dependency injection.
Add robolectric, assertj-core, to aid in testing.
Bumped build tools version to latest stable.
Added test methods to analyticskit to reach 100% coverage.

Author: trevjonez

.gitignore

@@ -33,3 +33,8 @@ proguard/
 
 # Android Studio captures folder
 captures/
+
+# Idea project items
+.idea/libraries
+.idea/workspace.xml
+.idea/modules.xml