* Refactored MediaProviderMusicTest splitting it up into separate classes
* Updated integration tests for MediaProvider
* Added tests to check displayartist
* Added tests to check various artists albums
* Updated travis build to include running local tests for each PR
* Removed unused methods from Utils.java
* Moved all resources required by both local and instrumentation tests
to testUtils
* Added proguard rules for the test builds to prevent proguard from discarding
the junit classes