Fixes #26 - Still able to move the map while in serving mode.

Seems like you could include this in the `setMapsControlsEnabled` method and get the correct behavior. But I don't have anything against disabling it either. If disabling though, I would prefer using the XML attribute in the `fragment_vendor_map.xml`. It's `map:uiTiltGestures="false"`

For reference:
https://developers.google.com/maps/documentation/android/map#using_xml_attributes