Added Surveys Tasks module to send reminders.
All reminders are CC'ed to the org admins.
Also added an index property on StudentProjects which is required for the reminder Tasks.
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