Zuko's Changes to the User Editor

This isn't ready to be pulled yet, I just wanted to put this here so that comments can be pointed out to specific line numbers, rather than me trying to guess what slicer was talking about in his comments in the original patch request:

http://sourceforge.net/tracker/?func=detail&aid=3190142&group_id=147372&atid=768007

Changes:

* Per slicer/pcgod, threw out a lot of widgets and replaced them with the start of a toolbar.
* Reverted a few of Zuko's changes that the devs weren't entirely happy with.
* Changed things to QDateTime.

Current screenshot: http://imgur.com/VJI8T.png