citation tools -> rich citations
remove search button
(c) PLOS
Merge branch 'master' into feature/api_v0

Conflicts:
	app/views/layouts/application.html.haml
add VCR for tests, use for papers_controller_spec
fix for references_controller_spec, new upstream metadata
make references_controller_spec use VCR
fix papers_controller_spec VCR recording
style fixes
Merge branch 'master' into feature/api_v0

Conflicts:
	spec/controllers/papers_controller_spec.rb