Beginning of babel mesh in the interactive installer

src/freedombone-config

 ROUTER_IP_ADDRESS=
 ENABLE_CJDNS=
 ENABLE_BATMAN=
+ENABLE_BABEL=
 DEBIAN_REPO=
 NAMESERVER1=
 NAMESERVER2=
   if [ $ENABLE_BATMAN ]; then
       echo "ENABLE_BATMAN=$ENABLE_BATMAN" >> $CONFIGURATION_FILE
   fi
+  if [ $ENABLE_BABEL ]; then
+      echo "ENABLE_BABEL=$ENABLE_BABEL" >> $CONFIGURATION_FILE
+  fi
   echo "DEBIAN_REPO=$DEBIAN_REPO" >> $CONFIGURATION_FILE
   echo "NAMESERVER1=$NAMESERVER1" >> $CONFIGURATION_FILE
   echo "NAMESERVER2=$NAMESERVER2" >> $CONFIGURATION_FILE
   if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
       ENABLE_BATMAN="yes"
       ENABLE_CJDNS="no"
+      ENABLE_BABEL="no"
   fi
 
   data=$(tempfile 2>/dev/null)
       if grep -q "ENABLE_BATMAN" $CONFIGURATION_FILE; then
           ENABLE_BATMAN=$(grep "ENABLE_BATMAN" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
       fi
+      if grep -q "ENABLE_BABEL" $CONFIGURATION_FILE; then
+          ENABLE_BABEL=$(grep "ENABLE_BABEL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
+      fi
       if grep -q "BATMAN_IPV6" $CONFIGURATION_FILE; then
           BATMAN_IPV6=$(grep "BATMAN_IPV6" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
       fi