Fixed a bug with number of views for question not being updated (https://trello.com/c/srNiqesm/110-count-the-number-of-times-question-was-viewed)
Added dusen gem for easing up the pain of %LIKE% queries. Similar questions are now displayed alongside the question being viewed. Removed search from header as it has never been used. (https://trello.com/c/ieAItIN6/111-display-similiar-questions-next-to-the-one-being-currently-viewed)