Alt-mode for building modules

[470lm]

In the options->interface there's a checkbox to show beacon modules in alt-mode, but not for the rest of the buildings, as in one checkbox that hides or shows modules in alt mode in all buildings that aren't beacons
I think would be a nice addition to clear up the icon bloating on buildings in alt-mode

[Muche]

The reason beacons are treated differently is that they actually show inserted modules even without Alt-Mode.