Update jquery to version 1.8

Version 1.9 breaks backwards compatibility on some functions.
1.8 is required for jquery-pjax to work
Add hotspot for application constroller filters
Save user_data and move userDataCallback for later use
Add read method for domain
Move themes' methods to ThemeHelper
Add method to return theme javascript source
Support tinyMCE load through jquery's ajax
Put content in a partial
Move theme js into head
Fix eval of lambdas in application-ng layout
Cache theme renderings
Start user_data ajax before ready and apply on ready
Clear notice as pjax will use the same data
Add pjax plugin
Don't translate already translated texts
[shopping-cart] Add more payment methods
Merge branch 'pjax' into cirandas

Conflicts:
	app/helpers/application_helper.rb
	config/locales/en.yml
	config/locales/pt.yml
	public/javascripts/jquery-latest.js
Update themes