Added more options to the Locations Field

Hi Elliiot,

I needed to customize the Location Field for a client of mine. Attached you will find the changes I have made. If you like them, feel free to incorporate them in to the current location field.

Changes:
Maps now use Google Maps new style (version 3.12, https://developers.google.com/maps/documentation/javascript/basics#VisualRefresh)
Added option for show/hide Map Type Control (Hybrid, Satellite)
Added option for show/hide Street View Control
Added option for show/hide Point Of Interest (Google Places)
Added option for map height (minimum 150px)

Best regards,
Ejub

![screenshot-1](https://f.cloud.github.com/assets/4465232/521700/0f54713e-bfcb-11e2-928c-007658cc0adc.png)