fix some lint issues
fix lint issues - delete drawables,...
rename bottombar_separator because it`s not a .9.png
Refactor brick map.
Add test for category brick factory
Refactor failed tests caused by new brick category factory
ignore actionbarsherlock lint issues
Update strings.xml

little string fix
Fix NullPointerException in MainMenuActivityTest.
Merge pull request #394 from Catrobat/fixLintErrors

Fix lint errors
Merge branch 'master' into RefactorAddCategoryBricks
Merge pull request #398 from Catrobat/RefactorAddCategoryBricks

Refactor add category bricks
Quickfix of ButtonView Bug
Adaption of testcases.
Merge pull request #400 from Catrobat/BugButtonView

Quickfix of ButtonView Bug
Merge branch 'master' into Issue#393
Fixed testcases