Flat Wizard: show/set imaging camera sensor temperature

[Stewart Tansley]

Would be nice to just see the current imaging camera sensor temperature in the Flat Wizard UI, under binning/gain – just for convenient validation before a flats run.

Optionally, it would be nice to be able to SET the temperature for cooled cameras here, but just showing it is the priority as I suspect setting gets more complicated and may be addressed by the upcoming new Sequencer.

Related: Issue #533, Issue #401

[Stefan B]

Flat wizard can be controlled in the advanced sequencer for the upcoming 3.x version. There you can ensure that the camera is cooled. On the flat wizard page this has no place there.