learning circles

coordinate study groups for online courses

Remove meets_weekly field from database - it was set to False incorrectly in many instances and keeping it correct is a pain

Update test to use meeting end date rather than duration and fix test that depended on a relative date without using freezetime

Add missing helper utility and add frontend path to webpack config to avoid relative imports

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