Fix bug 826444: Disable "fullscreen" section editing.

Since we've decided the only way we want to support section editing is
through the inline AJAX-y edit, this disables the ability to do it
through any other kind of request, and updates the section-editing
unit tests to match that.
fix bug 769516 - Add ?toc document option
Fixing borked test
Move MindTouch redirects to be the last thing we put in urlpatterns.

This (hopefully) solves the issue several people have run into with
local dev instances, since in that setup the MT redirects conflict
with the local static-media patterns. Local instances don't actually
need those URLs, and production doesn't use the static-media patterns,
so switching the order should solve the problem.
Wrap error message in gettext.
bug 831444: Remove chat app
bug 831444: Remove customercare app
bug 831444: Remove forums and kbforums apps
bug 831444: Remove inproduct app
bug 831444: Remove twitter app
bug 831444: Remove customercare app (part 2)
bug 831444: Remove kadmin
bug 831444: Remove questions
bug 831444: Remove uploads app
bug 831444: Remove gallery app
bug 831444: Remove tags app, misc urls cleanup
bug 831444: Remove flagit app