Implements further Google maps API calls

# Changelog

## M.MapView

### Add flow properties
- disableDoubleClickZoom
- scrollwheel
- zoomControl
- language
- clientId
- channelId

### Add flow methods
- panTo
- panBy
- setZoom
- getZoom

### Add flow cssClasses
- map_container
- gmap

## M.MapMarkerView

### Add flow properties to 
- optimized

### Add flow methods
- setPosition


For further information see the google maps API specification:
http://code.google.com/intl/en-US/apis/maps/documentation/javascript/reference.html