#20 Traffic light indicating status of production

A traffic light with three states:
GREEN:
- Production runs with no bottle-necks

YELLOW:
- spare parts in the store run out soon
- bottle-neck in the production line (e.g. too much
workers at one working place)

RED:
- some / one spare part in the store is empty

The traffic light should be visible from any window in the
WiSim (e.G. Top Menü oder Bottom). Clicking it should
provide a popup with Informations about the problems
(e.G. "RJ45 soon too low. CD-Rom soon too low")