Events styling

Some styling on the Events, both on the detail and the events list.

@ppepper, @KimSJ, @jogwen  Any suggestion for the visual?

This is how it looks like now:
# Event List Tab
![Event_list](https://f.cloud.github.com/assets/96245/121836/a939e2d0-6e03-11e2-8b32-4c2cb64dd9db.png)
# Events Map Tab
![Map_list](https://f.cloud.github.com/assets/96245/121837/af24cc46-6e03-11e2-8721-165506a736fb.png)