Removing ChunkProfile from the codebase.
Added loading batch to submission and assignment
Added is_live field to batch
Preprocessor directory, starting script file.
Basic preprocessor working
Checkstyle comments working
refactored extensions. still needs testing.
multi class migrations
alum registration: form, hashing, and redirecting. no email or token verification.
registration request flow complete
first pass token verification
first pass user model saving. bugs: username/email,devdb
Added refactored classes to admin. Fixing some crashes.
minor template differences
Working on refactor
Removing semesters from user profile
fixed unindent error
Merge branch 'mglidden-preprocessor-refactor' into registration
ensures that the alum.mit.edu email address has not been used before
allow primary email to be separate from alum.mit.edu email