Partial fix for displaying mentors and students on Organization home page.
Connections between mentors and students are not yet displayed and also there is some probably with displaying markers in Safari for some reason, everything works fine in FF.
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