Modifications in FragmentLength, EnrichmentScores, network.and and run_pipeline.py.

FragmentLength component I added a function to subsample the reads to make it faster. I also cleaned up the code for better readability.
EnrichmentScores component I removed some hardcoded paths, added anduril parameters for projectleader and queue_type. Some changes in output files, i.e. a header line in EnrichmentScores file. And a new port for the top motifs.
The option for giving a WM in the param.yaml file is removed. network.and and run_pipeline.py files were adapted accordingly.