Please include Byzantine Golden Horn Tower in "select all mercenary houses" hotkey

This would make setting waypoint for mercenaries units much easier.

Foreign Engineering Company should also be included in “select all siege workshops”.

It would also be nice if the Palatine School is included in “select all barracks”, “select all stables” and “select all siege workshops” so that players won’t have to change the waypoint for Palatine School separately when they want to set waypoint for units from those buildings.