<issue_start><issue_comment>Title: login form needs spinner
username_0: when i click login or press enter, there should be a spinner until the action complets.
<img width="262" alt="screen shot 2015-09-20 at 5 22 20 pm" src="https://cloud.githubusercontent.com/assets/963093/9982981/43a7693a-5fbc-11e5-976f-a8fee492e81b.png"><issue_closed>