"plot-paralogs" command generates the "rate_adjustment/species" directory if the directory doesn't exist (i.e. it has been deleted), avoiding that the code crashes. 

* Condense, improve and clean up Nextflow logging
- tries to remedy visual issues in ANSI console by condensing and
  shortening line lengths of log output
- improves some wording, consistency and whitespacing of log output
- refactor some log output code into functions
- adds ksrates version to log

* Don't clean up if ksrates config file newly generated
There won't be anything to clean up, and onComplete would print
irrelevant warning about empty focal_species parameter.

* Single '/' in logs folder path when focal_species empty

* Some renaming of channels and variables
- Correction -> Adjustment
- peakCalling -> paralogsAnalyses

- If log file exists and ERROR lines exist,
  point only to the log file and not to
  the error report above.

- Added error message when logfile exists
  but there are no ERROR lines
- Reduce code redundacy

* LMM warns and skips if components > datapoints