Allow admins to mark a paper as selected
A selected scope for all papers
Merge pull request #30 from eurucamp/feature/29/mark-papers-as-selected

Allow admins to mark a paper as selected
Fixed FeedbacksControllerTest
Created shared partial for nav links in admin section
Created Communication model.

We're going to use this to send mails to people! :yes:
Recipients can be assigned to Communications in a more dynamic way
Created Communication controller, views and mailer