VP1: fix some missing signal/slot errors #2

Together with !69047 (merged), this closes ATLASVPONE-653

The problem this time was that connect was being called on signals and slots which weren't implemented. I started adding them, but then realised that the widgets were disabled in the interface. Since I didn't have easy access to QtCreator, at this point I gave up and just commented out the problematic lines.

I also made some changes to reduce the verbosity of VP1 - this can be added back by setting the VP1_DEBUG_OUTPUT env variable.

And for a bit of fun, I added a 3D ASCII art VP1 logo.

cc @rbianchi