Merge pull request #903 from will-moore/cli_switch_group

Add switch-group info to user CLI page
Add omero fs section to sysadmin docs.
Add omero fs section to user docs and link to sysadmin.
merge dev_5_0 -D org: PR 900 (OMERO configuration properties)
merge dev_5_0 -D org: PR 901 (Further clarification of in-place on Windows.)
merge dev_5_0 -D org: PR 910 (Document CLI command fs)
merge dev_5_0 -D org

Repository: openmicroscopy/ome-documentation
Excluded PRs:
  # PR 899 rleigh-dundee 'Cpp: Document building with cmake (dev_5_0)' (exclude comment)
Updating 8848b4f..a3a8cab
Merged PRs (fast-forward):
  # PR 903 will-moore 'Add switch-group info to user CLI page'

Merged PRs:
  # PR 900 sbesson 'OMERO configuration properties'
  # PR 901 bpindelski 'Further clarification of in-place on Windows.'
  # PR 910 ximenesuk 'Document CLI command fs'

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