Change BrickCategoryDialog to BrickCategoryFragment
Remove BrickCategoryDialog
Add testOptionsEnableLegoMindstormBricks in ScriptFragmentTest

This test enables the Lego Mindstorm bricks from the
BrickCategoryFragment
Merge branch 'master' into ChangeCategoriesDialogToFragment
Enable home button
Use 9 patches for layout in BrickCategoryFragment
Merge pull request #207 from Catrobat/ChangeCategoriesDialogToFragment

Change categories dialog to fragment