Basic Maps

Hi Jon, I've got maps working on a basic level.

There's a bit of lag when it loads in due to it having to open and read all of the XML files. It might be better if we could combine all of the GPS data into one big XML file for it to use.

I'm assuming that the maps don't need offline functionality like the rest of it? I'm not sure if there's actually a way to make Google Maps work offline.

Not tested on a phone yet but working on the tablet emulator.