Update the current jquery library to 1.8.0.

This release is 13kbs larger than the currently used 1.3.2. (32kb vs 19kb)

Some methods/functions used in RB might have been deprecated. See http://api.jquery.com/category/deprecated/.

This update hosts all updates/improvements from 1.4 to 1.8. 

All release notes:

1.8: http://blog.jquery.com/2012/08/09/jquery-1-8-released/
1.7: http://blog.jquery.com/2011/11/03/jquery-1-7-released/
1.6: http://blog.jquery.com/2011/05/03/jquery-16-released/
1.5: http://blog.jquery.com/2011/01/31/jquery-15-released/
1.4: http://jquery14.com/day-01/jquery-14

Notable improvements: 

This update would bring in multiple performance improvements: 
- Faster selectors, events, and popular methods
- Better cross-browser compatibility
- Use of new methods and syntax

Djblets might require an update as well.

Local dev. Things seem to be working so far. No errors.

More testing to be done.