Check facility relation
Check facility relation

Membership filter assumed relation to facility for any model and it's
queryset.
Some models need a little indirection, to find facility.

pitpalme/volunteer_planner,christophmeissner/volunteer_planner,pitpalme/volunteer_planner,christophmeissner/volunteer_planner,volunteer-planner/volunteer_planner,coders4help/volunteer_planner,christophmeissner/volunteer_planner,coders4help/volunteer_planner,volunteer-planner/volunteer_planner,coders4help/volunteer_planner,christophmeissner/volunteer_planner,pitpalme/volunteer_planner,pitpalme/volunteer_planner,coders4help/volunteer_planner,volunteer-planner/volunteer_planner,volunteer-planner/volunteer_planner