Reset to master

Change-Id: I5d39c5698f59814a277dda213438f0d3af383477
UI improvements

* Percentage calculation now excludes inappropriate/hidden/oversighted
* Amount of feedback with and without comments is displayed
* Improved the feedback page header information: more compact; only displays
  amount of posts and percentage of positive votes
* Removed the "Showing:" prefix in front of the list of filters
* A couple of new SVG icons (like the negative/positive/neutral smiley faces)
* A couple of CSS improvements

Change-Id: I977c2a4acbdc2135ed548da1c0c2005b99aa4871
Quickly enable/disable AFTv5

Feature requirements: http://www.mediawiki.org/wiki/Article_feedback/Version_5/Feature_Requirements#Enable.2Fdisable_feedback_on_a_page

TL;DR:
* (if feedback disabled) "Request feedback" link in toolbox, on article page
* (if feedback disabled) Yellow box on special page with button to re-enable
* New "settings" in special page. When clicked, display link to enable/disable
* Links to enable/disable go to:
  * (admins) page?action=protect, where detailed permissions can be set
  * (editors) api call; will set permissions to aft-reader (enable) or aft-editor (disable)
* Refactored checks to verify if AFT should be displayed
  * Page protection level set = enable (whereas previously, permissions could only be used to "disable" what was enabled through category whitelist/lottery)

Change-Id: I7029a628ba724ba53f3aaebbf98e3d652c823464

Conflicts:
	ArticleFeedbackv5.php
	modules/ext.articleFeedbackv5/ext.articleFeedbackv5.dashboard.css