remove ugly inset shadow from header
remove ugly inset shadow from header

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