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.