Add HTTP Code message to German locale

new: redirection-host.forward-http-code added

frontend/src/locale/src/de.json

@@ -506,6 +506,9 @@
 	"redirection-host.forward-domain": {
 		"defaultMessage": "Forward Domain"
 	},
+	"redirection-host.forward-http-code": {
+		"defaultMessage": "HTTP Code"
+	},
 	"redirection-hosts": {
 		"defaultMessage": "Redirection Hosts"
 	},