Reverting last 4 patches containing GHOP related views.
As Lennard suggested all the model patches should come first
followed by the logic and views patches, to make sure nothing
committed breaks the existing code after thorough review.
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