Make the CAN relay safe and effecient

[NicoOhR]

When the CAN wires disconnect the entire project stalls and eventually terminates, in the interest of maintaining a local copy if a failure like this occurs, the program should be insulated from this failure and resume operations.

More over, currently the CAN relay assume that all values that we get are floats (or at the very least 32 bits in length) however the ECU and most of the ADC values are not that high of a resolution, and a lot of the last bits are wasted. Therefore, the data payload and relay should be updated to more effectively relay and save the data.