Use jQuery 1.9.1.  No fixes or changes yet.
jQuery 1.9 upgrade: live() -> on()

http://jquery.com/upgrade-guide/1.9/#live-removed
jquery 1.9 upgrade: Change attr() and removeAttr to prop() where appropriate.

http://jquery.com/upgrade-guide/1.9/#attr-versus-prop-
Upgrade jquery-ui from 1.8.21 to 1.10.2 .
Upgrade Chosen from 0.9.8 to 0.9.12 .
No, really, update jQuery UI.

Previous commit (9a15879) had wrong jquery-ui download customization.
Only call resizable('destroy') if the chat window has been made resizable.
Merge 'master' into jquery-1.9

Conflicts:
	public/js/notifications.js
Refactor and fix scroll down post loading (re: jQuery 1.9).
Repair chat functionality re: jQuery 1.9.
More repairs to JS re: jQuery 1.9, $(html).
Merge branch 'master' into jquery-1.9

Conflicts:
	public/js/libertree/post_loader.js