fix ability to create proposal from discussion. Remove '500 characters remaining' countdown because it's broken
add mailer interceptor in 'development' mode to prevent e-mails from being sent out.
fix handling of new proposal based on discussion when errors occur
allow proposal creation based on whether the committee can create proposals
hide the 'create proposal from discussion' from all-but-owner/admin
fix discussion#show
Merge branch 'master' of https://github.com/rdunlop/unicycling-rulebook

Conflicts:
	app/views/discussions/show.html.haml