Update product page links & 4.4 docs link messages
Fixing feature link in sidebar menu
merge develop -D org -I include -E exclude: PR 626 (Add new Squash tutorial and screenshots)
merge develop -D org -I include -E exclude: PR 660 (Update documentation to use Pillow instead of PIL (rebased onto develop))
merge develop -D org -I include -E exclude: PR 665 (Update 5 docs for release changes  (rebased onto develop))