Fixes ActionTracker crash on development mode

  Loads action_tracker_has_comments plugin, that dynamically adds
  comments to ActionTracker::Record, before every request in development
  mode to avoid undefined method error.

(ActionItem2728)
Merge commit 'refs/merge-requests/393' of git://gitorious.org/noosfero/noosfero into merge-requests/393
Show object in exceptions notification of feed-updater and delayed_job
filter_html: parse only sources that have macros

This solves every problem related with Hpticot breaking pages since the
parse was happening on the MainBlock too. But this does not changes the
fact tha Hpricot is currently dead and we should move on to nokogiri.

(ActionItem2873)
environment_tests: fix tests due to new enable feature save as default behaviour
profile_list_block_test: fix due to change on content_tag to tag
Merge branch 'parse-everything' into stable
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
Add pjax plugin
Merge branch 'pjax' into cirandas

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