Updated the docs on how to operate nomad. Now there is a documentation of the...

Updated the docs on how to operate nomad. Now there is a documentation of the CLI (few use cases and command reference) and the whole doctree has been modified for better navigation. Also added a new dev-dependency for sphinx-click that can autogenerate docs for click.
5 jobs for clidocs in 29 minutes and 18 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build #1014217

00:20:52

passed buildgui #1014218

00:04:30

 
  Test
passed linting #1014219

00:02:02

failed tests #1014220

00:08:26

76.0%
 
  Release
skipped release #1014221
allowed to fail manual
 
Name Stage Failure
failed
tests Test
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