All comments now hold a direct reference to their video. Reduces database queries for finding comment count.
Merge branch 'master' of https://github.com/Podmedics/podmedics_victory

# By Edward Wallitt
# Via Edward Wallitt
* 'master' of https://github.com/Podmedics/podmedics_victory:
  add comment count to right sidebar of video page
Updated spec to reflect new system for comment counts. Removed final usage of comment_count.