Add a grade field to the Grading Project Survey form.
This also takes care of validating and transforming the data into True(pass) or False(fail). GradingProjectSurveys are hereby working for developers.
Reviewed 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