add CSS to exception page - fixes #13747
add CSS to exception page - fixes #13747

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