First light cleanup.
Add upload exam / download hws for admins
Change config vars from dict to list
Add upload url functionality.
Fix and update current assignment status
Assignment 4 released
Add param to split up archives
Support download of grades as csv.  Add final project.  Support for
hidden assignments.
Changes for 2012
Fix syntax error
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add libin as grader
Add assignment 2
Assignment 3
assign 4
Upload form and config change
Exam / project grades.
Remove /* in grades.
Ability to bulk upload comments for an assignment.
Also released final project comments.
Initialize Fall 2013 semester.
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