protractor login helper

 * adds login helper for integration test
 * demonstrate usage with simple test for tenants section
 * fix for testability of auto-refreshing ticker in tenants list
but I don't want a test here.... 
![screen shot 2014-10-15 at 11 42 02 am](https://cloud.githubusercontent.com/assets/205004/4651300/07e69498-549b-11e4-8289-efacae31dc95.png)
want this number to be accurate!