title: Add missing features to commonsense_qa dataset
comments: _The documentation is not available anymore as the PR was closed or merged._ @albertvillanova it adds question_concept and id which is great. I suppose we'll talk about staying true to the format on another PR.  Yes, let's merge this PR as it is: it adds missing features.
  
  A subsequent PR may address the request on changing the dataset feature structure.
body: Fix partially #4275.