package.json - added test task and got rid of unused dependencies
package.json - added test task and got rid of unused dependencies

surveyjs/surveyjs,iFacts/surveyjs,iFacts/surveyjs,iFacts/surveyjs,dmitrykurmanov/surveyjs,espadana/surveyjs,andrewtelnov/surveyjs,dmitrykurmanov/surveyjs,surveyjs/surveyjs,espadana/surveyjs,dmitrykurmanov/surveyjs,surveyjs/surveyjs,dmitrykurmanov/surveyjs,surveyjs/surveyjs,andrewtelnov/surveyjs,andrewtelnov/surveyjs,espadana/surveyjs,espadana/surveyjs,iFacts/surveyjs