First attempt at porting the new design over to trac

CSS, fonts, and image files were copied straight from the
djangoproject.com repo.
The site.html template was modified to accomodate the new
layout (mostly header and footer).
Improved styles for footer and header. Updated links in footer.
Styling for main navigation of trac
Additional styling for main content of the trac
Removed tabs in trac.css.
Improved the look of the ticket page.
Added some content to the left sidebar.
Moved sidebar to the right
Additional padding in ticket row
Pulled in latest styles from djangoproject.com.
Merge pull request #14 from django/redesign

Redesign 2014