Add more functions to gradebook formulas - AND, OR and a way to use transpose values

We ideally need a gradebook column that calculates the TOK/EE score for IB pupils based on their TOK and EE grades.

This is currently impossible because there are no AND or OR functions and it appears to be impossible to access the transpose grade values.

Eg if TOK grade = E or EE Grade = E Then Fail

IF (TOK transpose Value + EE transpose value) > x THEN EE/TOK score = 3