Feature requirest webui: show group io ports in the group module diagram

[trondarild]

It would be helpful (and cool) if the io ports of a group are shown in that group's module diagram. There are several possibilities, e.g. inputs can be shown as small, labeled circles on the left with outputs on the right, or inputs and outputs can be shown as special modules with their respective ports.

[christianbalkenius]

This is planed, but not yet implemented.