Merge pull request #56 from adrifelt/master

Remove repetitive HTML files, replace w dynamic survey creation
Pass a URL as a param to the surveys
Reset MAX_SURVEYS_PER_DAY
Update comment
Only require a single checkbox to be checked
Remove unused method
Move removeRequired event listener onto answer
Look for change event instead of click
Merge pull request #59 from adrifelt/fix-checkboxes

Fix "required" checkboxes
Separate sanitization and prettification
Remove repetitive query string splitting
Merge pull request #58 from adrifelt/passurl

Pass a URL as a query parameter to the surveys
Kill zombie window