presenter, admin, locations

made a presenter show admins locations, and let them add new locations.
locations will be used when by owners who would like to post a place to rent.  the owners can associated their postings with a city.
![lol cramped](https://cloud.githubusercontent.com/assets/755201/5109415/0d04ea92-6fdf-11e4-9d4d-da62fbfdd370.jpg)