use triggered map from response_set to speed up SurveySection#questions_for_certificate
use foreign key rather than loading association for comparison
include dependencies of survey questions
preload response->answers
match the response_set embed rules
Merge pull request #406 from theodi/delayedjob

DelayedJob
simplified select condition
Merge pull request #405 from theodi/certificate-page-performance

Certificate#show performance improvements
Merge branch 'master' into jurisdictions