learning circles

coordinate study groups for online courses

Merge branch 'lc_status' of github.com:p2pu/learning-circles into lc_status

use rrule text for meeting schedule or meeting count instead of weeks

remove start date field, add suggested dates to calendar, add delete button to date list

generate meetings from dates and load dates in frontend from meetings

Merge branch 'lc_status' of github.com:p2pu/learning-circles into lc_status

Only label learning circles as closed if signup is closed and there is a future meeting.