Project: less
Task (challenging): Click config panel button (class 'add-statement') to add an statement row. In design page each statement row (class 'statement'), user can click button (class 'remove-statement') to remove an statement row, click statement text (class 'statement-text') to edit it in place. In design page each option cell (class 'option'), user can click button (class 'add-option') to add an option column, click button (class 'remove-option') to remove an option column, click option text (class 'option-text') to edit it in place.