Custom error thresholds

[dobseh]

Less of an issue, more of a feature request.

Would it be possible to have custom error thresholds for some devices; things like motion and door/window sensors which may see clusters of activity during the day, but nothing overnight. This pattern really throws the average out and outs them in an error state when they are actually performing correctly.

Obviously possible to get round this with devices that also send temp or some other consistent output, but not with ones that only have one binary trigger.

[a-bali]

I added this feature, along with a whole bunch of other configuration options.