fixed issue with calculation score for select multiple questions
Merge pull request #12 from forcedotcom/select-multiple-issue

fixed issue with calculation score for select multiple questions
execute apex sharing ops in without sharing
Merge pull request #13 from forcedotcom/self-registration-sharing-exception

execute apex sharing ops in without sharing
Merge pull request #14 from forcedotcom/develop

fixes #10 and fixes #11