Issue #3160
- Use notifications API to display available update notification.
- Remove update_notification handlebars helper as now both the
check for an available update and the notification handling
is run from the server's admin controller index method.
- Bind the notification's location property to a css class
for styling.
- Refactor Ember notifications to better handle notification
objects. Move responsibility for css class generation onto
the notification component.
- Refactor gh-notifications component to take a location argument
that's used to assign a css class and filter notifications.
closes#3057
- add Notification model
- update injected Notifications object to handle persistent notifications
- load server notifications on setup if logged in otherwise on successful sign-in
- changed all existing notifications.closeAll calls to closePassive
- fixed dismissable/dismissible spelling in server API & tests
- add notifications.closeNotification method so DELETE calls can be made for server-originating notifications
