z-index handle changed.  every value used only once from 1 to n.
Refactor handleAction* methods
fix broadcast issue

added precomputation
refactor broadcast bricks
replace object with string matching
smarter precomputation

added regression tests

improve performance

Fixing tests and refactoring
quickfix for issue #877
Merge branch 'broadcastfixTestRebased'
Merge pull request #998 from Catrobat/issue#877

quickfix for CAT-879
Merge pull request #1006 from Catrobat/cat#981

fixes CAT-981, CAT-982

z-index layer handle changed. every value now is only used once (from 1 to n)
extended Testcase
reformat code
added sanity check
update sanity check + test
pre check added when project are loaded
QA Analyse + code format
Removed Xstream converting before "project differ check" (at saveProject)
Formatted code
fix for testProjectSameAsStandard, locking issue
quick hack for utiltest
lock fix + pmd fix
checkstyle fix
fail in sanitychecktest
speakbricktest fix + test in utilstest