extract the functionality that determines the select options away from the adding of those to a form
CRM-12053 make getOperationPair non-static again. However, Lybunt & Sybunt form date operations remain broken :-)
CRM-12053 fix remaining static operators
Merge pull request #576 from eileenmcnaughton/CRM-12053

CRM-12053 fix operators back to non-static