free tickets with workshops now go to paypal, and coupons now work on workshops
js updated to include radio buttons in workshop questions
BUG detected with sub-total and where question extra fees are parsed! revenue almost fixed.
fixes workshops and coupons and ticket prices and order total. Revenue table also works.
adds tix_values_used post_meta to each question, and correctly increments the number of times used for each value in each question. does not work for radio buttons yet. front-end code needed
radio button question limit works. fix #7