Skip over users that have already been shared with when sharing with a group
Skip over users that have already been shared with when sharing with a group

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