Merge branch '5.4' into 6.0

* 5.4:
  Add redirection for removed article

Author: javiereguiluz

_build/redirection_map

@@ -537,6 +537,7 @@
 /components/security/firewall /security#the-firewall
 /components/security/secure_tools /security/passwords
 /components/security /security
+/components/var_dumper/advanced /components/var_dumper
 /email /mailer
 /frontend/assetic /frontend
 /frontend/assetic/index /frontend