Pixl LCD initialisation and output

Thanks @Gordon.
Meanwhile I tried the Bluetooth.setConsole() and it works.
Now I understand what it was about.
The other thing is only cosmetic. No trouble currently, but sometimes I am trying to be a perfectionist. Actually there were two things why it struck me:

1. I am using the screen 9o° rotated so the Logo appears sideways. Looks a bit odd.
   
2. My onInit() did not do the screen refresh right away, but only a setInterval()so there was a delay till my own layout took over. I have fixed this now.
   But for the "final touch" I will probably consider doing something about the startup animation. If you don't mind. ;-)