wmstartup: Add xrdbupdate startup task

.config/dtfscripts/services/0_kill_krunner.dtf

@@ -0,0 +1,15 @@
+#! /usr/bin/env bash
+#
+# Simple wmstartup service
+# Copyright (C) 2018 salt <salt@lap-th-e560-0>
+#
+# Distributed under terms of the MIT license.
+#
+
+service_name="Krunner"
+service_process="krunner"
+
+function start() {
+	return 0
+}
+