CRM-12961: do not assume that unselected yes/no radio-buttons means 'no'.
Merge pull request #1060 from mlutfy/4.3-customdata-yesno

CRM-12961: do not assume that unselected yes/no radio-buttons means 'no'
CRM-12951
Merge pull request #1067 from deepak-srivastava/ninja

CRM-12951