System update

Updated a number of items over the past few weeks, including:

- added an mgrs system for creating grids (note: this requires the 'GeoConvert' utility from the GeographicLib project (geographiclib.sf.net))
- can add KML layers
- more details on Job pages
- when creating AOIs, you can delete extraneous ones on the create page by clicking on them. 
- started pointing some js references to local versions
- added geocode lookup on AOI creation page
- removed badges directory, and provided implementation for connecting with gamification system (django-gamification)