Working with brix in MulmultiSelectTests.html page
MultiSelectTests.html page is working with closure
MultipleChoiceQuestion and MultiSelectQuestion brix working with demo files
answermanpolling.js compiled with Closure
Merge pull request #91 from ysahnpark/ClosureOOP_youngsuk

Migrated MultipleChoiceQuestion and MultiSelectQuestion (including demo file and dependencies) to Closure