Re-instate Free/Paid tabs (bug 945659)

Fixes the conditionals so the tabs show up.

I suggest using https://github.com/mozilla/zamboni/pull/1482/files?w=1 to view the files (Adds ?w=1 to ignore purely whitespace changes in the diff)

See the bug for more info: https://bugzilla.mozilla.org/show_bug.cgi?id=945659