[Bf-webcontent] Added redirects for old URLs

[Bart Veldhuizen]

Hi,

the old style blender3d.org urls ('../About/?sub=Gallery') were still
active and were serving outdated content. I have added rewrites for each
one of them so whenever you use an old link or bookmark you will still
go to the right page.

You can try for yourself here - Google still has links to some old
pages:

http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=site%3Awww.blender3d.org+%22sub%3D%22+&btnG=Search

If I missed anything, please let me know.

Cheers,

Bart