Mirrors the 4-column rotary A row that appears when 2an==3, so the same
fine/small/medium/large increment selector that drives XYZ jogging now
also drives W jogging. New control-view methods:
- aux_jog_incr(sign) - PUTs aux/jog with the current jog_incr amount
converted to mm (handles imperial display units)
- aux_move_zero() - PUTs aux/move {mm:0}, the absolute counterpart to
aux_set_zero (which redefines the current pos as zero without moving)
Row is hidden when w.enabled is false, so users without the auxcnc
controller see no change.