Fixed #10004 and #12320 -- Enabled the makemessages management command to collect comments for translators that start with the "Translators" keyword. Thanks for the report and patches, martinb and Claude Paroz.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14595 bcc190cf-cafb-0310-a4f2-bffc1f526a37