cleanup todo
2nd-use comments translated to english and minor renames.

Code is otherwise pretty much the same, but could be cleaned up a lot - breaking from switch everywhere is messy.
2nd-use unify similar statements
2nd-use repeat active.
Umlauts added to Fx layer
reformat layouts and remove test key positions
MMB on left upper thumb.
Better with trackpoint, and most often used right after LMB just below.
Pinkydrop for Hypernano