Fix broken pg_dump command

Error in the backup command found by Sam on the forums.
See http://www.openmicroscopy.org/community/viewtopic.php?f=5&t=6852
Remove '#sh' from script
Revising testing page to document pytest. See #11423
Merge pull request #504 from joshmoore/fix-pg-dump

Fix broken pg_dump command
Added section on compound LDAP filters to sysadmin docs
Added section requiring new_users be filtered by the group filter
Fixed underlining typo
Fixed punctuation
Moved LDAP config overview anchor
Merge pull request #508 from hflynn/rebased/dev_4_4/ldap-filters

Ldap filters (rebased onto dev_4_4)
Add further help on using setup.py
Fix a few minor errors from PR review.
Merge pull request #507 from ximenesuk/testing-pytest-update

Document pytest on developer testing page
Updating downloads links & config
Adding / to config to fix downloads links in text
Removing random q from release-process.txt
Deleting most of users & fixing index pages &links

Conflicts:
	omero/users/client-tutorials/insight/getting-started.txt
	omero/users/virtual-appliance.txt
Further tidying of remaining user docs

Conflicts:
	omero/users/virtual-appliance.txt
help links ready for new root link in conf.py

Conflicts:
	common/conf.py
	omero/users/virtual-appliance.txt
Extra restructuring of indexes & resources