Change title to make freedns explicit

src/freedombone-config

             data=$(mktemp 2>/dev/null)
             if [[ "$DDNS_PROVIDER" == "default@freedns.afraid.org" ]]; then
                 dialog --backtitle $"Freedombone Configuration" \
-                       --title $"Your main domain name" \
+                       --title $"Your main domain name on FreeDNS" \
                        --form $"\nWhich domain name should your email/XMPP/IRC/Mumble be associated with?" 13 55 5 \
                        $"Domain:" 1 1 "$(grep 'DEFAULT_DOMAIN_NAME' temp.cfg | awk -F '=' '{print $2}')" 1 24 33 40 \
                        $"Code:" 2 1 "$(grep 'DEFAULT_DOMAIN_CODE' temp.cfg | awk -F '=' '{print $2}')" 2 24 33 255 \