Missing configuration mode - manual test mode

[karliatto]

It would be nice to have a missing configuration mode with a testing mode in the firmware.

When the firmware is first flashed and it is not configured it will display a screen that says it is not configured you need to go to platform.bleskomat.com.
But in order to allow testing machine in production we would create manual test mode that when the device is not configured but the button is hold for 5 seconds it is enabled and it allows testing of the functionality.