Fix WebDAV external storage opendir() and stat() for directories, bug fix for oc-1160
Fix WebDAV external storage opendir() and stat() for directories, bug fix for oc-1160

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