Save public key to file

src/freedombone-controlpanel-user

     trap "rm -f $data" 0 1 2 5 15
     dialog --title $"Enter email address, Key ID or full key below" \
            --backtitle $"Freedombone User Control Panel" \
-           --editbox $data 8 60
+           --editbox $data 8 60 2>$data
     sel=$?
     case $sel in
         0)