Trigger geomap-ready only when all map are loaded
Update demo to show multiple Geomap instance.
- update Geomap.js getMap function to get the right map
- update popup_function.js to reflect the change to handle multiple Geomap instance
Merge pull request #2354 from jolevesq/multiple-geomap-demos

Geomap: Add demos showing multiple maps on the same page