added assignment/student page which will house grades for all assignments
added grade link to index
added grade controller
added grade query to assignment page
moved student view to index and index to admin
added list of students to admin page
added view for index.html
made grader assign grade in a smarter fashion
added possible points
added last action to student index page
made grade assignments collapse
fancied up assignments interface
made update page nicer
prettied up admin.html
added problems to assignments
fixed wording of one answer
Merge branch 'assignments' of https://github.com/nickdotreid/runestone into nickdotreid-assignments
grading logic for non-checkmarks and safety check for no assignments