Fix typo

Makefile

 	cp img/backgrounds/${APP}_*.png ${DESTDIR}${PREFIX}/share
 	cp img/avatars/* ${DESTDIR}/usr/share/${APP}/avatars
 	cp src/* ${DESTDIR}${PREFIX}/bin
-#	cp src/${APP}-controlpanel ${DESTDIR}${PREFIX}/bin/control
 	cp src/${APP}-mesh-batman ${DESTDIR}${PREFIX}/bin/batman
 	cp src/${APP}-backup-local ${DESTDIR}${PREFIX}/bin/backup
 	cp src/${APP}-backup-local ${DESTDIR}${PREFIX}/bin/backup2friends

src/freedombone-utils-setup

 }
 
 function turn_off_rsys_logging {
-    if grep -q '/var/log/auth.log' /etc/rsyslog.conf; then
+    if grep -q '/dev/null' /etc/rsyslog.conf; then
         return
     fi
     sed -i 's|mail,news.none.*|mail,news.none      /dev/null|g' /etc/rsyslog.conf
 
 function setup_grub {
     if [[ $ARCHITECTURE == 'qemu'* || $ARCHITECTURE == 'amd64' || $ARCHITECTURE == 'x86_64' || $ARCHITECTURE == 'i686' || $ARCHITECTURE == 'i386' ]]; then
-        if ! grep -q 'iframes=0' /etc/default/grub; then
+        if ! grep -q 'ifnames=0' /etc/default/grub; then
             sed -i 's|GRUB_CMDLINE_LINUX_DEFAULT=.*|GRUB_CMDLINE_LINUX_DEFAULT="quiet ifnames=0 slub_debug=FZP slab_nomerge page_poison=1"|g' /etc/default/grub
             update-grub
         fi