ziafazal/api-time-series-invalid-data: fix negative values in users_not_started
tie into the xblock publish API point for progress and grading events

Conflicts:
	lms/djangoapps/progress/models.py
tie into the xblock publish API point for progress and grading events
Merge pull request #337 from edx-solutions/derf/rc_2014-12-01

Merge in to release for  2014 12 01 deploy