Fix delay ASIC pattern tests to work with non-384 boards
Update slowcontrol 3.3V reference value. Often seen that previous value was too low and unreasonable (1.2 -> 1.3V)
Misc. minor changes
Misc. changes:
    * Change maximum startdly time to 2.25 ns to squelch this annoying and pointless warning
    * Some improvements to standby/pulsing loop tests
    * Some misc. improvements to output/logging
Misc changes.
    * Streamline a lot of code in TesterBoard.py and Delays.py
    * Additional comments, improvements of function description.
    * Rewrite and eliminate some unnecessary functions
    * Other small changes