Make slice.php call map_init when the active tab is geo view.
Make slice.php call map_init when the active tab is geo view.

Should make map render consistently, and save some cpu time
rendering the map if it's never viewed.

tcmitchell/geni-portal,tcmitchell/geni-portal,tcmitchell/geni-portal,charliemeyer/geni-portal,tcmitchell/geni-portal,tcmitchell/geni-portal,charliemeyer/geni-portal,charliemeyer/geni-portal,charliemeyer/geni-portal,charliemeyer/geni-portal