fixes submission description not being saved
adds test and potential fix for automigrating > max submission count
Merge pull request #750 from codalab/feature/handle-max-submissions

adds test and potential fix for automigrating > max submission count
Merge branch 'refs/heads/upstream/master' into upstream/feature/worksheet_interface

Conflicts:
	codalab/apps/web/static/codalab.min.map
new min JS