Add SphinxIndexCallback to new models [ci skip]
Comment out rspec test for popular articles in new layout
Paginate individual issue page

Conflicts:
	app/views/issues/show.html.erb
Remove date formatting helper
Add traits to issues factory

Conflicts:
	spec/factories/issues.rb
Only show issue articles that have been published

Conflicts:
	app/models/article_issue.rb
Include article into query
Add missing links and update behaviors.js

Conflicts:
	app/assets/javascripts/vertical/behaviors.js
Remove class because its supposed to be added via js
Move pagination below results

Conflicts:
	app/views/issues/show.html.erb