add readonly calendar to the eventsources
add readonly calendar to the eventsources

bluelml/core,andreas-p/nextcloud-server,whitekiba/server,andreas-p/nextcloud-server,cernbox/core,cernbox/core,xx621998xx/server,jbicha/server,pollopolea/core,pollopolea/core,cernbox/core,endsguy/server,sharidas/core,IljaN/core,pixelipo/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,cernbox/core,IljaN/core,lrytz/core,endsguy/server,lrytz/core,endsguy/server,pmattern/server,owncloud/core,whitekiba/server,lrytz/core,nextcloud/server,bluelml/core,owncloud/core,bluelml/core,sharidas/core,pixelipo/server,sharidas/core,owncloud/core,nextcloud/server,bluelml/core,Ardinis/server,nextcloud/server,Ardinis/server,IljaN/core,IljaN/core,pmattern/server,pmattern/server,michaelletzgus/nextcloud-server,pollopolea/core,jbicha/server,IljaN/core,jbicha/server,pollopolea/core,lrytz/core,xx621998xx/server,nextcloud/server,jbicha/server,pmattern/server,pixelipo/server,sharidas/core,whitekiba/server,pixelipo/server,pmattern/server,michaelletzgus/nextcloud-server,endsguy/server,endsguy/server,whitekiba/server,xx621998xx/server,michaelletzgus/nextcloud-server,bluelml/core,owncloud/core,xx621998xx/server,owncloud/core,andreas-p/nextcloud-server,lrytz/core,cernbox/core,Ardinis/server,pollopolea/core,Ardinis/server,pixelipo/server,sharidas/core,whitekiba/server,phil-davis/core,jbicha/server,xx621998xx/server,Ardinis/server,michaelletzgus/nextcloud-server