message: password invalid better error msg
diff: @@ -2285,7 +2285,7 @@ boolean WiFiManager::validApPassword(){
  if (_apPassword == NULL) _apPassword = "";
  if (_apPassword != "") {
  if (_apPassword.length() < 8 || _apPassword.length() > 63) {
  - DEBUG_WM(F("AccessPoint set password is INVALID"));
  + DEBUG_WM(F("AccessPoint set password is INVALID or <8 chars"));
  _apPassword = "";
  return false; // @todo FATAL or fallback to empty ?
  }
  