1. Created function for pressure measurement and screenwrite.
2. Added INPUT_PULLUP to Fill Sensor pin declaration in Depressurize loop.
3. Harvested more user messages into PROGMEM
1. Added variable for session fills;
2. Moved session fill readout to end of Platform Down loop, not Up;
3. Close so S5 at end of Manual Mode so doesn't get hot;
4. Rewrote some user messages.