SAT Equivalent Fixed

Fixed the issue that caused the ACT conversion to throw an error.  The
SAT conversion was taking a string value as SAT score.  Now the SAT
score will be the later of the two scores if SAT & ACT scores are both
input.
SAT Score update

Excluding 0 as a valid score for SAT Math or Verbal, re-calculating AI
after scores are removed.
SAT Score update - for real this time

The previous commit was only updating some Dreamweaver sync files.  This
one does what the current commit describes, excluding scores of 0 on SAT
Math or Verbal, and re-calculating AI when scores are removed.