Correctly check for overlapping memberships and chairs (!246) · Merge requests · thalia / concrexit · GitLab

Merged Joost Rijneveld requested to merge 232-commissies-en-memberships-inline-bewerken-meerdere-voorzitters into master Dec 10, 2016

Closes #232 (closed)

cc @twiggers die misschien nog even over deze logica wil nadenken