cleans up header notifications integration tests
Updated styles on admin customize page.
Refactor UsersController#invited

* Add test coverage
* Simplify controller action
* Move finder code to Invite class
Update discourse.js

Inserted  if (url.indexOf(u) != -1) return url; in getURL function because of bug in subdirectory install on some urls doubles relative url prefix, for example /forum/forum/latest.json. With this fix it works fine.
Merge pull request #1644 from demil/patch-1

Update discourse.js
Merge pull request #1643 from zachwlewis/fix-admin-customize-header

Updated styles on admin customize page.
Merge pull request #1640 from salbertson/sa-refactor-users-controller-invites

Refactor UsersController#invited
Merge pull request #1642 from velesin/header_notifications_tests_refactoring

cleans up header notifications integration tests
JSHint
You miss one little `return` statement and @nlalonde crashes the composer :)
add query parameter to temporarily disable customization
fixes the problem with perceived not mocked xhr call in tests
fixes missing imege url errors in logo component tests
fixes Ember's deprecation errors in NotificationsController unit tests
add unicorn launcher to support live reloads
add oobgc rudimentary support
vendor/bundle can be ignored
strip out docker stuff, put into a plugin
Merge pull request #1645 from velesin/header_controller_test_fix

fixes the problem with perceived not mocked xhr call in tests
Merge pull request #1646 from velesin/logo_component_test_fix

fixes missing imege url errors in logo component tests
Merge pull request #1647 from velesin/notifications_controller_test_fix

fixes Ember's deprecation errors in NotificationsController unit tests