repacked dskyDisplay_digits

it is now easier to shift all data out to the 74595s
fixed infoLight shift registers

infoLights now occupy shift registers 6 and 7.
shift register 5 has 3 MSBs unutilized
got rid of dskyDisplay_updateSingle() - now done in dskyDisplay_update()
directly - oddly enough that increased the .hex size considerably
added VERB/NOUN info lights

also combined a switch() statement in dsky_updateDisplayData() to save
some space