working on moving export to services
added service to generate downloadable zip

moved the mess from rake task to this service
moved csv generation to service too
changed text for download page. again
json builder made a little prettier

accepts: b5a6ccaa93
removed attr_accessors
added photo urls to csv
Merge branch 'feature/454-csv-for-downloads' into next

Conflicts:
	app/controllers/relics_controller.rb
added nid files to download page