Stable release version 0.8

Release version contains the previous dev-version changes:

8: Pipeline allows now separate 3' and 5' adapter trimming
7: Critical bugfix, seqkit rules reported suddenly non-zero exit errors
6: Case caught, when no novel genes are detected
5: Critical bugfix in the seqkit output
4: Path bug in final report fixed (after renaming not adjusted)
3: Resource allocations for a missing rule added
2: Some defaults server resource allocations adjusted
1: New dev branch opened