message: added uptime to info
  still subject to rollover
diff: @@ -756,6 +756,11 @@ void WiFiManager::handleInfo() {
  // @todo add versioning here
  page += F("<h3>esp8266</h3><hr><dl>");
  +
  + page += F("<dt>Uptime</dt><dd>");
  + page += (String)(system_get_time() / 1000000 / 60) + " mins ";
  + page += (String)((system_get_time() / 1000000)%60) + " secs";
  +
  page += F("<dt>Chip ID</dt><dd>");
  page += ESP.getChipId();
  page += F("</dd>");
  