Some user interface improvements

See merge request dijkema/dt_ctrl!5

trace2port and dockerfile

See merge request !2

Currently only supports ex2, but more can be added similar to andN.

Modified dt.ctrl to use the ex2 block to prevent simultanious activation of
focusbox outputs.

Made and block calculate functions status to prevent conflicts.

Make a few servers conditional on ctrl file
Improve some socket logging.

(Error is to scary)

- Correctly display safety status
- Add override status

prevent magic lib failure from crashing http server