String allquestionrequireanswer, 'All questions are required and must be answered', is a complete sentence, and should have a period at the end.

Test Instructions

1. Apply patch
2. Navigate to Site Administration > Development > Purge all caches and Purge all caches
3. Add or navigate to a survey activity
4. view.php of the survey, with no attempt made, should present the string 'All questions are required and must be answered.' above the survey questions. Note the period at the end of the string.