add location to brigades
add locations.json for brigades via route
Merge remote-tracking branch 'cfa/master' into brigade_locations

Conflicts:
	app/controllers/brigades_controller.rb
add map to brigade overview

new js-routes.js for brigade locations
map to index page
manual merge schema change
?
ensure brigade has location

only add if brigade has a location
Merge branch 'brigade_locations' of https://github.com/milafrerichs/brigade into milafrerichs-brigade_locations