JIRA Suite Utilities causing Google Maps to load again if another plugin has already loaded it

Reproduction Steps
Load / Refresh the view issue page for an issue on latest JIRA Master OnDemand

What Happens

• The following JS error is returned:

  TypeError: n.google.maps.Load is not a function

• As a result, clicking on value for Location custom field doesn't show Google map

Environment to reproduce problem

• JIRA OnDemand version: ondemand-fireball-jira-master-1160
• Browser and OS environments:

  Browser	OS
  Firefox (19.0.2)	Mac OS X (10.7.5)
  Safari 6.0.2 (7536.26.17)	Mac OS X (10.7.5)
  Chrome 25.0.1364.172	Mac OS X (10.7.5)
  IE 8 (8.0.7601.17514)	Windows 7 - Service Pack 1
  IE 9 (9.0.8112.16421)	Windows 7 Professional - Service Pack 1
  IE 10	Windows 8 (version 6.2, build 9200)

As Google Maps is being loaded on JIRA.Events.NEW_CONTENT_ADDED (which is now being fired multiple times per page), Google Maps is potentially being loaded twice by JIRA Suite Utilities, resulting in the JS error occurring and the inability to view Google maps of location fields.

scinos, a JIRA developer, has listed the following for JIRA Suite Utilities to investigate in (as potential methods to rectify the issue). Please do not hesitate to mention or contact him if you have any questions regarding these:

1. use a namespaced JSONP callback for loading Google Maps. Right now "onGMapsLoad" is being used and could conflict with other plugins
2. check the "reason" parameter when listeing to JIRA.Events.NEW_CONTENT_ADDED. On KickAss we fire that event a few times per page and probably not all of them should trigger a Google Maps load
3. Check that JIRA Suite Utilities is not trying to load google maps again if they have loaded it once but they are still waiting for the network
4. update the code to use google.loader() instead loading gmaps directly