Moisture sensors returns only values between 450-1023 

Anybody knows if this is normal or why this happens? I published the code and the implementation for that in the sensor branch and check Sensor.md if any of you wanted to do some research. Else I don't think it's that pressing of an issue because we care more about dryness so between 850 and 1023 and we know that below 500 is wet. Anyway, when one of us finds a solution we'll close this. 