The work_submission model's update now reflected in views and logic.
Model for work_submission was modified during GHOP code integration but
was not reflected in views and logic. This commit fixes it.
Fixes Issue 700.
Reviewd by: Lennard de Rijk
Coverage: code coverage testing for Python
Coverage.py is a Python module that measures code coverage during test execution.
It uses the code analysis tools and tracing hooks provided in the Python standard
library to determine which lines are executable, and which have been executed.
For more information, see http://nedbatchelder.com/code/modules/coverage.html