Feature/map intent

This delivers **Milestone 2**.

Instead of embedding maps directly into the application, we use a Map Intent to launch Google Maps. This provides a better experience since it can provide driving directions, traffic, and all the capabilities of Google Maps.
![Screen Shot 2013-04-25 at 11 14 15 PM](https://f.cloud.github.com/assets/218121/428789/6777338c-ae1f-11e2-8a04-f77e6af6225f.png)


Filtering and ordering works in a rudimentary fashion.
![Screen Shot 2013-04-25 at 11 13 15 PM](https://f.cloud.github.com/assets/218121/428787/51893566-ae1f-11e2-8fca-505d19842184.png)

The property view was modified for viewing in landscape. I re-arranged and resized a few fields to make things look proper.

You'll notice the cancel button was replaced with a map button. This only appears once the address has been saved and is more useful than a cancel button since canceling can be done with the back arrow.

![Screen Shot 2013-04-25 at 11 15 30 PM](https://f.cloud.github.com/assets/218121/428791/98d6c316-ae1f-11e2-872e-dd37be630d3e.png)