Create Discussion
Discussion#create - fix bug with create discussion
Model#Project - Add has_many discussions
Add Discussion behaviors
Discussion#style - Add style to Discussions
Project# show view - create count link to Discussions
Project#show view - Add link to Create discussion
Project#show view - add discussion view in project page
Create _form.html.erb
Create _discussion.html.erb
Discussion#destroy - change format html
Add style to Discussion in Project
Add Discussion style
Create destroy.js file
Discussion#new view - change Back link
Discussion#style - add styles
Discussion#_discussion view - change Destroy link
Discussion#_discussion view - change link to show
Discussion#_discussion view - create block creator & optimization view
Discussion#_form view - redisign