Update product page links & 4.4 docs link messages
Fixing feature link in sidebar menu
Using right redirects for 5 downloads
Merge pull request #665 from hflynn/rebased/develop/release_updates

Update 5 docs for release changes  (rebased onto develop)
Merge remote-tracking branch 'origin/develop'

Conflicts:
	omero/themes/globalomerotoc.html
Merge pull request #671 from hflynn/rebased/develop/downloads_5

Using right redirects for 5 downloads (rebased onto develop)