fix filtering number like filenames in filelist
fix filtering number like filenames in filelist

forward port of https://github.com/owncloud/core/commit/847ad6c40b951cbd3d187e3c72cb55dc3acd6951
jbicha/server,IljaN/core,pollopolea/core,nextcloud/server,sharidas/core,andreas-p/nextcloud-server,IljaN/core,pmattern/server,andreas-p/nextcloud-server,endsguy/server,michaelletzgus/nextcloud-server,owncloud/core,jbicha/server,pixelipo/server,cernbox/core,owncloud/core,pixelipo/server,xx621998xx/server,Ardinis/server,endsguy/server,lrytz/core,owncloud/core,sharidas/core,xx621998xx/server,IljaN/core,lrytz/core,andreas-p/nextcloud-server,bluelml/core,andreas-p/nextcloud-server,cernbox/core,Ardinis/server,cernbox/core,nextcloud/server,xx621998xx/server,whitekiba/server,xx621998xx/server,pollopolea/core,IljaN/core,pixelipo/server,Ardinis/server,pmattern/server,andreas-p/nextcloud-server,bluelml/core,michaelletzgus/nextcloud-server,whitekiba/server,endsguy/server,Ardinis/server,endsguy/server,jbicha/server,lrytz/core,nextcloud/server,owncloud/core,sharidas/core,endsguy/server,michaelletzgus/nextcloud-server,whitekiba/server,pmattern/server,bluelml/core,cernbox/core,sharidas/core,pollopolea/core,michaelletzgus/nextcloud-server,cernbox/core,pmattern/server,IljaN/core,bluelml/core,whitekiba/server,phil-davis/core,pollopolea/core,Ardinis/server,jbicha/server,jbicha/server,whitekiba/server,bluelml/core,pollopolea/core,sharidas/core,pixelipo/server,owncloud/core,pixelipo/server,lrytz/core,lrytz/core,xx621998xx/server,nextcloud/server,pmattern/server