Add VWC calibration to client side

[jmadden173]

The VWC shouldn't be stored on the server side, it should be something applied to the client side as it is counterintuitive to set the calibration for the cells in a different way than setting the names for each of the cells. It also adds more computation time either when displaying the data or when packets are received.

[ahzired]

Reverting change, calibration will be done on server side to reduce payload length.