Cleaned up debug code and deleted unused code snippits, and removed unused variables.
1. Added counter for lifetime bottles filled;
2. Fixed bug where B2 flashed after null-bottle routine ran;
3. Further cleanup of unsused variables
4. Added gas burst at bootup to exercise S2
1. Fixed bug whereby null bottle pressurize condition did not always detect no bottle, and gas would continue spewing;
2. Reduced delay between closing door and pressurization starting.