82 notifications view

- Adds tab navigation to notifications view to fix #82.
- Shows "no notifications" when notices are removed. 
- General CSS formatting to notifications view, contacts and notifications tabs.
- Formatting of creation date handling and bug fix where formatting was not applying.

Notifications view:
![screen shot 2014-05-01 at 4 00 34 pm](https://cloud.githubusercontent.com/assets/704760/2858289/86a5c5c8-d184-11e3-8f78-ac4c2a760f81.png)

Contacts view:
![screen shot 2014-05-01 at 4 00 42 pm](https://cloud.githubusercontent.com/assets/704760/2858290/8b07dda4-d184-11e3-92ae-68f23b67822c.png)

No notifications view:
![screen shot 2014-05-01 at 4 01 04 pm](https://cloud.githubusercontent.com/assets/704760/2858293/92ad170e-d184-11e3-98a7-a619fb6abc95.png)