editing settings slot is 'awkward' if a decoder is active

[grahamwhaley]

It feels like if a decoder (CW) is active and decoder whilst you are in the 'edit slot name' text editing menu, things get a bit weird on the screen, as the cursor jumps around to the top line, when it should be on the edit text.

I suspect one of two things:

1) we are still calling setCursor, even though the decode 'display' is off, as we are in the menu 2) something is a little screwy with my RGB LCD integration into the neu-rah menu library.

I suspect (1), but the code looks good on a cursory glance:

  if (display ) {
    lcd.setCursor(0, 0);
    lcd.print(buf);
  }