fix MyProjectActivityTest

bottombar not yet implemented in this activity
update licensetexts
fix SourceTest

* remove unused strings
* add missing translations
* ignore MockSoundActivity in AssertionsCheck
Merge branch 'issue#98_testRefactoring' into issue#98

Conflicts:
	catroidUiTest/src/org/catrobat/catroid/uitest/ui/MyProjectsActivityTest.java