uppercase letters for english drone bricks
Merge pull request #1033 from Catrobat/CAT-1077

uppercase letters for english drone bricks
extended try-catch to catch an Unexpected NullPointerException
Merge pull request #1034 from Catrobat/cat-931

[CAT-931] extended try-catch
added file logging
fix incorrect broadcast behaviour
added script identifier to action strings
added regression test
removed method