Add alreadyValid fields to SliderSubQuestion and StarRatingSubQuestion
Remove API11 checks, it's now the minimal API
Fix typo in default values for StarRatingSubQuestion
Change "not apply" string to "I don't know"
Implement "alreadyValid" fields for slider and starRating questions

Also do some cleaning up of API11 checks
Switch to grammar v3.2
Add alreadyValid handling for manySliders question
Merge pull request #405 from daydreaming-experiment/feature/issue-393-grammar-v3.2

Implement grammar v3.2