Include forum_id in forum.thread.commented event.
Merge pull request #195 from mtyaka/comment-event

Include forum_id in forum.thread.commented event.
xblocks: Update hashes
ziafazal/api-social-stats-avg-by-enrollments: added

total enrollments to data
mentoring: Update hash
Merge pull request #196 from edx-solutions/ziafazal/api-social-stats-avg-by-enrollments

ziafazal/api-social-stats-avg-by-enrollments: added total enrollments to data
mattdrayer-api-user-avatar-city: Added fields