apply config file when starting riot, not installing, so we can support riots that were built by another process

riot/stop.sh

@@ -1,9 +1,19 @@
 #!/bin/bash
 BASE_DIR=$(readlink -f $(dirname $0))
-cd $BASE_DIR
 PIDFILE=riot.pid
+CONFIG_BACKUP=config.e2etests_backup.json
+
+cd $BASE_DIR
+
 if [ -f $PIDFILE ]; then
 	echo "stopping riot server ..."
 	kill $(cat $PIDFILE)
 	rm $PIDFILE
+
+	# revert config file
+	cd riot-web/webapp
+	rm config.json
+	if [ -f $CONFIG_BACKUP ]; then
+		mv $CONFIG_BACKUP config.json
+	fi
 fi