Plusplus people

It's pretty clear that points have become a serious problem of late. The combination of bots giving out points and people giving points to team names has left the point system devoid of all value. More importantly, points aren't fun anymore. These changes implement a couple of policy improvements.

1. Only people can give out points. If a user doesn't have an at mention  name, then that user cannot give points.
2. Only people can receive points. No more (taft)++