Fix usage of :omerocmd:.
Explain Windows ln_rm limitations.
Redact Windows limitations.
Implement Mark's requirements.
Remove the need for JAVA_OPTS on Windows.
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.
Fixes and typos following review.
Merge pull request #913 from sbesson/rebased/develop/cli_switch_group

Add switch-group info to user CLI page (rebased onto develop)
Deprecate omero_client.jar.
Change "part" to "section".
Use Java section of downloads page.
Don't encourage the use of Artifactory generators.
Merge pull request #883 from bpindelski/rebased/develop/lnrm-windows

Document client requirements for in-place import on Windows. (rebased onto develop)
Merge pull request #915 from bpindelski/rebased/develop/dev-java

Deprecate omero_client.jar. (rebased onto develop)
Further clarification of in-place on Windows.
Capitalise POSIX.
Correctly use the :file: environment.
Merge pull request #916 from bpindelski/rebased/develop/inplace-windows

Further clarification of in-place on Windows. (rebased onto develop)