Revert EventAggregateMember back to OneToOneField
Revert EventAggregateMember back to OneToOneField

kooditiimi/linkedevents,kooditiimi/linkedevents,kooditiimi/linkedevents,kooditiimi/linkedevents,aapris/linkedevents,tuomas777/linkedevents,City-of-Helsinki/linkedevents,aapris/linkedevents,aapris/linkedevents,tuomas777/linkedevents,City-of-Helsinki/linkedevents,City-of-Helsinki/linkedevents,tuomas777/linkedevents