HMI Calibration Calculate

Calibration Page Added to HMI :  

I added  a calculate function to calculate Slope and Offset and apply them to the Psi. 

I ran out of time but I was trying to also set the Raw Pressure Sensor data to be entered automatically using Max and Min variables.  

I also would like to add a Calibrate Button and a Set Low ,Set High Button so you dont have to actually input any number other then the external PSI readings  and maybe the High Raw as you wouldnt have an extra hand to push the hmi button when needed. 

 Oren