Add rudimentary CC: functionality on tickets, controlled by staff users. CC's
can be e-mail addresses or users, who will receive copies of all emails sent
to the Submitter. This is a work in progress.
* Added superuser 'System settings' page with links to admin
* Added ability to ignore e-mail addresses (using wildcards) from the e-mail parser
* Added link to ignore email address from ticket details page (for superusers only)
* Cleaned up report output by styling text & labels in the same way as tables in other views
* Cleaned up dashboard lists to show text in place of tickets if no tickets are found
* Added ability to sort in reverse order
NOTE: REQUIRES A 'syncdb' TO CREATE THE EMAIL-IGNORE TABLES. No other DB changes were made.