ken/dan: only logged in users see the 'New Question' link

* 'New Question' was previous able to be seen by anyone who enters the side
* moved around elements within the layout.erb
Dan/Ken: Changed question controller to only pass answers associated with that question
Refactored questions#create action

* done the Shadi way
* removed to_i when querying the database
Dan/Ken: Cleaned up Gemfile
changed name of ajax.js file
refactored Answers#create, added flash errors
added debugger gem, made answers attr accessible
Added validations to questions and answers and fixed the unhappy path for answer creation
Moved authentication in layout to its own partial
removed unused New view
Removed unused users view files
changed database settings to be local for test/development
got rid of users_controller and users routes to allow clearance to create them for us
Merge pull request #14 from gopher-snakes-2013/kenDan-fixbugs

Ken dan fixbugs