Leave admin/ for Django. Also, update translations.

There is no need to class with /admin. Also, comments
moderation/approval/removal now works.

Approval is missing. Should be easy.

Also, move some stuff.

A quoted search is a term or phrase between quotation marks; there is no
escaping of quotation marks. A quoted phrase is searched as-is (but ignoring
casing).

The quote must be between quotation marks; there is no escaping of quotation
marks.