Added org_home_gmap function to the map JS for displaying the mentor-student map.
Patch by: Madhusudan.C.S and Merio Ferraro
Reviewed by: Lennard de Rijk
Added mentor-marker.png to content\images.
This is for use on the organization home pages having the map displayed.
Patch by: Madhusudan.C.S
Reviewed by: Lennard de Rijk