Remove ability to trigger DEBUG mode via cookie
Remove ability to trigger DEBUG mode via cookie

Users should not be able to enable debug mode on their own by setting a cookie. Using debug mode might leak too much information about the environment or have other unexpected behaviour.

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