stuff for the login page

There is a bug, as we've discussed, but I want to get this in and pull requested before I go to sleep. 

Hello @davidbyrd11, 

Please review the following commits I made in branch 'tessr-login'.

42f239e0715ff99788113ad4245d5eafa48c459a (2013-07-28 01:17:08 -0700)
halp

e50b5b68b328a0c46df7d855ff08b744e5b44204 (2013-07-28 00:35:01 -0700)
add a login screen

29d0f435890b990cc8df724539537b7b158349bd (2013-07-28 00:00:29 -0700)
cleaning up after @ofxartem's mess


R=@davidbyrd11