- Made finfo only return the mime type (no charset information),
  since most of our code expects this behaviour. Changed
  check-attachments script so that it optionally checks that the
  stored mimetypes agree with the stored files. This helped discover
  a bug in the attach-endline-fix which was skiping files that were
  small enough that mime was not recognizing them as plain text.
- Fixed a bug with the textblock edit button not displaying the
  correct edit link for pages with round or task security.
- Replaced deprecated functions from mailing code base.
- Added an 'admin' tab to the top navigation bar.
- Fixed random unwanted characters in common/round.php