Added some comments

Initial code for a simple PID controller.

Units editing is more or less complete. Changed structures for heating, cooling, fan and door. Updated the web interface to confuigure all these things.

Added device configuration

More style updates

Added style to the maintenance menu

Ajax screen updates now use a single call to the server

A bit of code cleanup

Small fix for NA values

Temperature auto refresh and some layout improvements.

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mercurial