Issues/1768 automated tests admin

Start to better organize tests for Admin features: https://code.google.com/p/otwarchive/issues/detail?id=1768

Separated out Admin tests into their own folder DRYed them up a bit, and attempted to clarify what's actually being tested here. This issue is pretty open-ended, but I wanted to get some eyes on this before moving forward in the same direction. Feedback is welcome!