Add /release/:id/notes/ api + use in admin

Add /auth_token/ url + view
Replace NoteInline admin with ajax note table using api

Fix bug 1004015: Updating the Note.releases m2m relation from the
                 release page in the admin should update the
                 Note.modified field
Fix bug 979380:  Hide Note ID for bug
Fix bug 974703:  Make it possible to add notes on the fly
                 from release view
Fix bug 979390:  Add Edit link to edit notes from release detail
Fix bug 979946:  RNA API: filter notes by release
Merge pull request #33 from jgmize/api-admin-improvements

Add /release/:id/notes/ api + use in admin