[C2] Survey questions align horizontally

[ywarnier]

• create a survey
• do not select one question per page
• create a question of type "yes/no"
• select "horizontal" (default value) for the options layout
• copy the question twice
• click "Preview"
• click "Start the survey"
• the questions are aligned horizontally and the answers vertically. This is the opposite of what's expected (questions should appear one under the other, and answer options should show horizontally on the same line if space allows)