Add config option to disable Airbrake.
Merge pull request #18 from kaleworsley/disable_airbrake

Add config option to disable Airbrake
Sanity test and change to priority of check list updates when geom changes.
Made all proj obs csv generate in delayed job, redid our caching strategy for large obs csv exports.
Bugfix: Obs queue for sharing was being overzealous with its existing job check.
Merge branch 'master' into i18n

Conflicts:
	app/views/projects/show.html.erb