Fix bug 1110863 - Commit the db transaction before completing signup.

This is a regression from bug 1104864 and relateds to the abysymal
behavior of the Django 1.4 transaction middleware. Celery is just a
pawn in its game. God damnit.
Merge pull request #2950 from jezdez/bug1110863

Fix bug 1110863 - Commit the db transaction before completing signup.
bug 1110863 - remove username from deletion log
Merge pull request #2951 from groovecoder/remove-deleter-usernames-1109994

bug 1110863 - remove username from deletion log
fix bug 1110989 - add terms and cookies links to footer
fix bug 1111002 - add required terms field to signup
Merge pull request #2954 from groovecoder/update-policy-links-1110989

fix bug 1110989 and bug 1111002 - MDN policies and terms
[Bug 1093362] Download button placement is fixed
[Bug-1093362] Download button placement is fixed
Merged
[Bug 1093362] Download button placement is fixed