HID API simplification: DAD

- blockers:
	- implementing a list/tree/table "widget" for lesstif
	- implementing and testing the PCB_HATT_TREE in lesstif
	- lesstif fillbox bug

HID API simplification: actions

- obsolete actions to remove/revise:
	- lesstif: AdjustStyle (lesstif has its own window!)
	- lesstif: LesstifNetlistShow
