Activate Auth Form

Fixes #967 @mjallday I don't know how to test this.

We need to include {{action "on"=submit}} on every form. Otherwise, we get this:
![screenshot 2014-02-11 12 56 23](https://f.cloud.github.com/assets/602762/2141996/17e19d96-935f-11e3-8a37-5479c1108b1f.png)