create upload dir for lighttpd

directory is missing in the installation process but is used in the
lighttpd.conf

automated install/basic-install.sh

@@ -583,6 +583,8 @@ installConfigs() {
 	chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/run/lighttpd
 	mkdir -p /var/cache/lighttpd/compress
 	chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/compress
+	mkdir -p /var/cache/lighttpd/uploads
+	chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/uploads
 }
 
 stop_service() {