Show hardware type in build script
Remove obsolete PINKYDROP define
Purge all pressed keys to prevent commandmode from executing its activation keys.

Necessary if the mapped keys in IS_COMMAND happen to be valid commands.
Save pinkydrop and alternate layer setting persistantly in eeprom.
Remove currently unsupported alternative configs.

They depend on integration of further maltron changes not feasible right now on smaller teensy 2.0.
Exchange K and B to test _true_ BU-Teck