TryGhost/Ghost — pull request #3408 by jaswilli (2014-07-25 15:16:06+00:00)
Title: Do not clear password until after leaving signin

Closes #3399
* Provide our own authenticate action handler which does not
clear the password input.
* Use the Signin route's deactivate hook to clear the password
property on the controller after the user has transitioned
away from the signin page.