Changed the access checks in student_proposal view to use the newly created checks.
Patch by: Lennard de Rijk
Reviewed by: to-be-reviewed
Coverage: code coverage testing for PythonCoverage.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 standardlibrary to determine which lines are executable, and which have been executed.For more information, see http://nedbatchelder.com/code/modules/coverage.html