Most of the way toward sticky identifications.
Merge branch 'master' into community_identifications

Conflicts:
	app/models/identification.rb
	app/views/identifications/_identification.html.erb
	app/views/observations/show.html.erb
	db/schema.rb
	spec/models/identification_spec.rb
	spec/models/observation_spec.rb
Added explicit community IDs.
Merge branch 'master' into community_identifications

Conflicts:
	public/javascripts/translations.js
Merge branch 'master' into community_identifications

Conflicts:
	db/structure.sql
	spec/models/observation_spec.rb
Global and obs opt out for community taxa.
Merge branch 'master' into community_identifications

Conflicts:
	app/models/observation.rb
	app/views/identifications/_identification.html.erb
	app/views/users/edit.html.erb
	public/javascripts/translations.js
	spec/models/observation_spec.rb
Fixed broken user merging.
Merge branch 'master' into community_identifications
Adjusted community ID algorithm as per muir and loarie.
Added ability to request observation_photos with observations.
Merge branch 'community_identifications'
Fixed failing spec.