James - Sunday - more stuffs

Added pool and timetable creation, although unable to fully test UI timetable creation due to needing a UI job creation.
Added a message in application_controller.rb when the user isn't logged in. Saved in session[:logged_in_error], which is reset after being displayed on the home page. You can perform w/e CSS on it you want, or change it.

There is a weird error with creating a restriction, it doesn't seem to recognize the new approve column. Not sure whats going on.