added /post/id route that provides get endpoint for post. added get method for PostsController
made some changes to quote button functionality in new.jade. clicking quote switches from quick input
security check: only show post data to users who are logged in
feature: add username attribution to post quote.
ux: ensure that we show the textarea after a user clicks the 'quote' button
ux: mostly-painless improvement of iframe resize experience.
a different take on scrolling form into view after user intends to quote.
Merge branch 'quotes-with-attribution' into master