Init signal final

#154 (closed) Introduced semaphores in RunnableProducerStage which let it wait for Initializing- and StartingSignal. The analysis starts all threads instantly in init() and sends an InitializingSignal. All producer wait until they all get triggered.

Added 1 new commit:

• d3d93858 - added modification

Added 14 new commits:

• ee0a3e8a - fixed some pmd issues and moved some kieker related stages to another
• 11065816 - removed some more pmd issues
• 2a93485a - Merge branch 'pmd-fix' into 'master'
• 3496ee31 - minor refactoring
• 0148beca - removed obsolete class file
• 97e2e227 - reenabled test
• 1a665dcd - added InitializingSignal to the test; removed some obsolete class files
• 5f7d8971 - added test for printer
• 0b461065 - renamed method
• af2976c2 - added test for roundrobin2
• c5021709 - removed unused pipes;
• d96e5b46 - added a simple test
• 1df08c1d - removed unnecessary file and updated dependencies
• f01000b1 - Merge remote-tracking branch 'origin/master' into InitSignal-final

mentioned in merge request !41 (merged)