Actualize ru.js.categories
FIX: adds fixture test helper to JSHint config
using max-width on the #main-logo versus setting a static width
cleans up setup of header integration test
Merge pull request #1630 from awesomerobot/master

using max-width on the #main-logo versus setting a static width
Merge pull request #1632 from velesin/header_integration_test_clean_up

cleans up setup of header integration test
Merge pull request #1631 from velesin/fixture_jshint_fix

FIX: adds fixture test helper to JSHint config
Merge pull request #1629 from dmchk/ru

Actualize ru.js.categories
FIX: Unloading categories page failed in some circumstances; update to latest Ember.
FIX: Pinned posts were not displaying at the top of categories.
Add test coverage for UsersController#invited
Create helper that stubs Guardian
Test invite filtering
Move invite finders to model
Move Invite filtering to new class
Move Invite filtering to model