Changing downloads links & removing unused extlink

Conflicts:
	docs/sphinx/users/matlab/index.txt
	Also fixed omero docs link so goes to 4 again rather than 5
Updating download link in sidebar menu
Fixing downloads link
Adding in 4.4 version where looked relevant
Update auto-generated documentation for 4.4.9

This commit was generated by calling ant clean jars tools then
ant gen-format-pages gen-meta-support from components/autogen
merge dev_4_4 -D org -I include -E exclude: PR 673 (Make configuration file suffix configurable)
merge dev_4_4 -D org -I include -E exclude: PR 710 (Data test updates (rebased onto dev_4_4))
merge dev_4_4 -D org -I include -E exclude: PR 732 (New download link)
merge dev_4_4 -D org -I include -E exclude: PR 734 (Update auto-generated documentation for 4.4.9)