Add sorting of student projects on organization home page.
List of student projects on organization home page is now sorted in alphabetical order by student name. Fixes issue 613.
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