Login with persona
Fix tests
Add a test for failed login
Presence: return a 401 if the assertion's verification failed
Worker: fix the error handling for #sendAjax
README: add the AUDIENCE for the runserver command
Fix worker tests
Merge branch 'master' into persona-login
Address code review comments
Tests: add a XXX comment for #_verifyAssertion
Worker: add a test for #sendAjax
verifyAssertion: set the encoding of response
Force logout when the login failed
Add a XXX comment for notifications
Sidebar: improve a test description
Merge branch 'master' into persona-login
Merge pull request #192 from tOkeshu/persona-login

Persona login