basic discussion scaffold
add discussion form to dashboard
public activity for discussions, and make discussin related to user and syndicate
translate functional tests from text_post to discussion
add some style to the discussion#show
add replies to discussions
fix migration -varchar to string
add replies_counter to discussion
add discussions index
delete unused file
discussion nil state
put forms into a partial, and add discussion form to discussion index, with some snazzy javascript
redirect back after discussion create
remove h2's from the headers
add redcarpet