Handle multiple universes

[TimPietrusky]

In order to handle multiple universes in one show, we have to use the universe entity correctly.

• Create / Update / Delete a universe
  • Name
• Assign fixture to universes in fixture-view
• Assign fixtures to universe in universe-view
• Warning if a fixture was added to multiple universes
• Allow multiple WebUSB DMX512 controllers

Use Cases

• Use the same scene / animation for fixtures that are in different universes