Only do elasticsearching if somebody's logged in.
Return entirety of resultset.
CSV download of a swarm

Consists of:
* a formatter to take a swarm and a resultset and spit out CSV
* entirety method to get a complete elasticsearch index
* controller method to send csv to browser.
Front-end link to download swarm.
Only do elasticsearching if somebody's logged in.
Merge branch 'bulk_download'

Conflicts:
	swarmize-dot-com/app/views/swarms/show.html.haml