Connect Badges to Specific Groups

[tw2113]

Original: opencredit/badgeos#135

"I'm looking to use BadgeOS with my junior high classes, and currently I organize my courses in WP using BuddyPress groups. Since I teach several different subjects, I'd like students to only see the Badges/Quests that apply to the classes in which they're enrolled without creating a duplicated badge structure for each subject. I was able to use the Members plugin to restrict badges to certain user types, but users still see all badges and are only restricted after they've attempted to click on a badge outside of their user type. Ideally I'd like to see a checkbox on the badge creation page that would tie it to a give BP group."