Added Google Maps Div

Added a div for users to select different Google maps (roads, imagery,
hybrid, and terrain) as basemaps.
Highlight Google map thumbnail when selected

Mimicked esri basemap widget - when you choose a Google map, the
thumbnail will be highlighted in blue.
Also decreased the size of the basemap gallery label font.
Google basemaps thumbnail images

Google basemaps thumbnail images
Added Google maps to Basemap Gallery

Added Google maps to the Basemap Gallery.
The basemap modal now closes automatically when a basemap is chosen.
The hunt modal now closes automatially after the user makes a selection
from one of the dropdowns.
Updates to agsjs/dijit.