Map for Event

References #98 

After playing with Leaflet and checking out MapQuest I decided to just see what I could do with Google Maps, which has an amazingly awkward API but really bloody good results.

![screen shot 2013-06-06 at 23 43 55](https://f.cloud.github.com/assets/736291/621196/fe035bd6-cefa-11e2-9e22-a2b96470da11.png)

I've added data attributes for actual event names as well as the addresses, but for the sake of showing off the potential UI have ignored those and hard-coded some things.

Improvements would be to:

 - customise the marker so it's bigger
 - remove the map controls
 - rejig the layout so we can overlay some things on the map