Added final submission api
Add Final Submission Details and Front codeviewing changes
Fix Submit Downloading Bug and Seed
Get Submit Details, Temporary fix for submit being in contents
include tz data (unused) for now
Tidying up, investigating deploy issues
try to avoid appengine caching
Merge remote-tracking branch 'origin/final_submission_api' into frontend_subm

* origin/final_submission_api:
  Added final submission api
prevent late final_submissions, fix caches and front_end things'
prevent caches
fix Submission API to not be a model
temporarily avoid adding a submit tag
Redo final submission method
attempt to handle multifile encoding;
diff fixes
Whitespace change to re-run tests.
Cleaned up api.
Merge remote-tracking branch 'origin/master' into frontend_subm
Merge pull request #312 from Cal-CS-61A-Staff/frontend_subm

Add Final Submission Details and Front codeviewing changes
Resolved merge conflicts to merge with master