add isGroupAccessible in OC_SubAdmin
add isGroupAccessible in OC_SubAdmin

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