fix issue #979
added javadoc for the 'getGitVersion()' method.
gradle build files cleanup.
updated version number for the junit library dependency.
Merge pull request #984 from ne0fhyk/fix_issue_979

Fix issue 979
Merge branch 'master' of https://github.com/DroidPlanner/droidplanner into feature_android_wear

Conflicts:
	Android/build.gradle
Merge branch 'feature_android_wear' of https://github.com/ne0fhyk/droidplanner into feature_glass

Conflicts:
	Android/build.gradle