Support the new jQuery-based datagrids

Review Request #552 — Created Sept. 17, 2008 and submitted


Review Board SVN (deprecated)


This updates Review Board for the change to use jQuery for datagrids.

Mostly, we're getting rid of a lot duplicate code that existed in Djblets. We're using Djblets's datagrid templates and CSS files instead of our nearly identical copies.
The dashboard and review request list pages still work.