on the way to kill all warnings
did some redesigns - necessary for piano refactoring
deleted unnecessary functions in PianoActivity
added file checks to start the Activity faster - well ... didn't work
committed changes in PianoActivity, Soundplayer and constants
added progress bar while piano is loading
refactoring piano
Merge branch 'master' into RefactorPiano

Conflicts:
	project.properties
	src/at/tugraz/ist/musicdroid/MusicdroidActivity.java
Merge pull request #4 from Catrobat/RefactorPiano

Refactor piano - merged auch nicht geprüft