Initial 9538 fix
Fixes suggested by Petr & JM
Fixing user accounts section
Troubleshooting page further fixes
Remove links to limitations &fix lib/scripts issue
Final style fixes & removing brackets I missed
Merge pull request #356 from kennethgillen/vdi_ports_4_4

Update to nat port mappings on VDI web page (cherry-pick from develop docs PR)
Merge remote-tracking branch 'origin/dev_4_4'

Conflicts:
	omero/sysadmins/windows/server-installation.txt
merge dev_4_4 -D org -I include -E exclude: PR 346 (Training update april 13 1)
merge dev_4_4 -D org -I include -E exclude: PR 352 (9538 fix)