significant changes to appearance and functionality in mer.html and associated javascript and stylesheets. In particular, the insertatCaret functionality has been implemented.
Apply Will's changes to editor and question view. Add banner and footer to all views.
Make year/term/course/question dropdown lists retain their selected value.
Fix minor typo
Add mongo queries to search courses/years for given course, year or term. Make year/course dropdowns update to selected year/term/course