Temporarily use full year for previous years and add a way to store the sightings as CSV strings.
Test Bounding Box in JS, not on Flickr API
Merge commit '44f1c5c4b1c8099cc27da8bfa7c2f292475e5b40' into natgeo

Conflicts:
	monarch-explorer.js

(Fix conflicts)
Add csv-export related functions.
Turn on, and modify, custom gradient.
Don't use the full year on master.