MUZIMA-DATE: Updating date validation to match the requested date format.
MUZIMA-DATE: Updating date validation to match the requested date format.

ShwethaThammaiah/muzima-android-1,ShwethaThammaiah/muzima-android-1,sthaiya/muzima-android,vijayakumarn/muzima-android,ShwethaThammaiah/muzima-android-1,vijayakumarn/muzima-android,sthaiya/muzima-android,sthaiya/muzima-android,vijayakumarn/muzima-android,vijayakumarn/muzima-android,ShwethaThammaiah/muzima-android-1