Small bundle of changes

- Changes in config file reading method (old was not working for me at all)
- Removed file filtering for stash (filtering should be done globally)
- Fixed PMD
- Added jacoco + coveralls (badge needs to be changed to right one after pull)
- Few other small fixes
I agree with @zygm0nt : move this filter to scalastyleProcessor. Further filters (java filter for PMD) should be moved to processors if needed. PMD is not Java specific.