PDA temperatures are hardcoded to be in Fahrenheit

[rckforme]

Thank you very much for your hard work on the AqualinkD project.

I have and 2008ish system with a PDA-P4 chip and remote and just got it working with your code. I like to live in Celsius instead of Fahrenheit and noticed right away that while the web presentations offered the right temperature digits, the units were wrong.

I'm hoping to forward a pull request to your project presently, that auto-configures PDA systems to the appropriate units.

Thanks, Robert

[rckforme]

Pull Request: https://github.com/sfeakes/AqualinkD/pull/124