iter4-1: Upload qsets tests (#26)

* Added code climate for cucumber

* starting tests for questions upload

* starting tests for questions upload

* set up dbs for questions and wrong answers

* finishing up questions tests

* question diffs infra

* upload_questions finishing up view code

* Got to success from upload qset once

* fixed delete for upload qsets

* basic cucumber tests for upload qset diff page made for one path

* Add check for confirming upload saves for qsets, bug fixes

* added some more paths untested

* fixed dependent destroys on question, wronganswer, qset

* uncommented wa_tag feature and adjusted upload_qset feature