refactored dmx-storage

- changed design of dmx_universes
- made dmx_universes static
- added "enum dmx_universe_state" for easy on/off switching

ECMD:
- added "dmx set {universe} {on,off}"
- added universe state to "dmx universe"

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>
added LIVE/BLACKOUT button to dmx.ht

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>
typo fix

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>
scripts/indent.sh

Signed-off-by: Maximilian Güntner <maximilian.guentner@gmail.com>
Merge pull request #266 from mguentner/dmx-storage-refactor

Dmx storage refactor