Incorporate basic rendering for FEMA ImageEvents and NOAA Disaster Toolkit
Added in heading rotations, closes #194
Colored heading tabs to match Feature colors, closes #212
Added default=null for maps tables, closes #211
changes to allow maps to save
Update colors of work cells, tied to #212
Merge branch 'develop' of ssh://github.com/ngageoint/geoq into develop

Conflicts:
	geoq/maps/models.py
Merge branch 'develop' of ssh://github.com/ngageoint/geoq into develop
Improved text on blue BG for % complete
Merge remote-tracking branch 'origin/develop' into develop
Use guardian permissions for access control
Add a Settings model that allows site-wide settings, use it to set colors of workcell statuses
Merge branch 'develop' of ssh://github.com/ngageoint/geoq into develop
Add category and order field to feature types, and sort icons on edit screen and edit page
Merge branch 'develop' of github.com:ngageoint/geoq into develop
Allow custom icon sizes, added FEMA-specific icons
Show feature details on FeatureType List page. Closes #155
More descriptive access denied messages
Merge branch 'develop' of ssh://github.com/ngageoint/geoq into develop
Added 'smart-icon' system to recolor icons on the fly. Details in #218