Added documentation

Added error handling on processing output outine

See merge request !218

Added some fixes to db_jobdata bugs detected while analyzing #598

See merge request !217

Fixed an issues with list index after pop() while parsing slurm output

See merge request !216

Added RUN_ONLY_MEMBERS setting and filter logic.

Closes #371

See merge request !210

more setstatus docs

See merge request !215

Fixing bracket missing

See merge request !214

# Conflicts:
#   docs/source/usage/setstatus.rst

Revert "Merge branch 'improve-setstatus-docs' into 'master'"

See merge request !213

This reverts merge request !212

Improve setstatus docs

See merge request !212