Allow admins to remove all tags (bug 1012649)

clean_tags already return an empty set when there are no tags,
so that `if` was preventing us from removing all tags from the
the addon.
Merge pull request #2078 from diox/fix-removing-all-tags

Allow admins to remove all tags (bug 1012649)
escape the description in reviewer pages (bug 1013347)
Merge pull request #2083 from andymckay/1013347

temporarily disable inline descriptions
Update prod.txt
Merge pull request #2084 from eviljeff/patch-8

Update prod.txt
send reports to the reports page (bug 1014967)
Merge pull request #2085 from andymckay/1014967

use reports url
Removing space to make log parsing easier
settings/identitystage: sync up settings with stage.
settings/identitystage: more updates.
Commit from Mozilla Verbatim by user cesperanc@.: 1250 of 2492 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user cesperanc@.: 1427 of 2492 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user cesperanc@.: 1511 of 2492 strings translated (0 fuzzy).