Added timeline view for GHOP.
Moved the method _createTimelineForType from Views to Logic for both core
Program and GHOPProgram. Added default values parameter to apps_tasks_limit
and slots in Program model. Registered timeline view for the sitemap in GHOP
callback.py. Added timeline view module and class which overrides the edit
method. Overriding the params['edit_form'] to accommodate dynainclude and
dynaexclude fields.
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