Removing custom domains

Removing the custom domains that I had on my own wikis because of URL problems with them.
Update all.j2
Merge pull request #467 from Pavelovich/patch-14

Removing custom domains
minor corrections
Fix Collection, removed unused exts

Rolling back to one commit before current 1.23 master (that's got a bug) to fix some issues, removing some unused SocialProfile extensions
Merge remote-tracking branch 'upstream/master'