removing comments functionality as the same is now provided via disqus
removing traces of comments from idea controller
cleaning up routes
increasing text area size
displaying the text using markdown at appropriate places
adding a better over layout and taking care of proper text display through markdown
adding validation for uniquness of user name and other misc changes added
adding basic roles for users to perform create, edit and destroy wrt wikis
misc commits to start with specs now
Merge remote-tracking branch 'origin/wiki_full_dev'