Restrict Rollbar to production.
Add Note model and boilerplate.
The thread_safe 0.3 gem was pulled from repos, so let's go back to 0.2 for now.
Doing this the right way with a stripped down, easy to understand Notes controller.
Update the nav to scope links to role.
Add link to review proposals page for reviewers.
Add the first 50 characters of a reviewer's notes to the list of proposals to review.

I'm doing this so that reviewers can title their notes with an identifier/title that makes sense to them,
and have it appear on the list of proposals. I'm hoping it'll make the list easier to use once we have quite
a few proposals to manage.
Bury some dead code.
Merge branch 'master' into jnf/reviewer_notes

Conflicts:
	Gemfile.lock
Migrate conrtrol helpers to the Event decorator.
Merge pull request #59 from jnf/jnf/reviewer_notes

Jnf/reviewer notes