fixed CAT-531

added try/catch to location of possible exceptions

added default case to switch statement
Refactored XStreamToSupportCatrobatLanguageVersion091AndBeforeTest.java Upgraded language version to 0.93
Merge pull request #1066 from Catrobat/refactorBricksFixes

[GSOCTC-1.1] Refactor Bricks Fixes
Merge pull request #1083 from Catrobat/CAT-531

[CAT-531] NullPointerException: LookFragment.onActivityCreated
cat-531 #fixed
fixes double entries in MainMenuActivity's setting menu, caused by merge of CAT-1055
Merge pull request #1087 from Catrobat/fixCorruptMerge

fixes double entries in MainMenuActivity's setting menu
Merge branch 'master' into nfcTesting
adapt fixes from LookFragment for NfcTagFragment