test/edit: deleteQuestion action implemented
turbolinks is off
addAnswer action is implemented
Answer id after add fixed; Answer add action is implemented
is_right field on client side fixed; answer is_right default value set to false
Answer is_right switch implemented
new question layout fixed
test_edit page: answer layout fixed
test renamed to survey
merge test_edit branch to master
sign in form fixed(issue after merge test_edit branch)