Modified formatting to get rid of br's

Makes some question groups format correctly.
	modified:   app/helpers/surveyform_helper.rb -  added method question_group_class
	to determine whether question groups are inline or grid

	modified:   app/views/surveyforms/_question_field.html.erb
	modified:   app/views/surveyforms/_question_group.html.erb
	modified:   app/views/surveyforms/_question_group_fields.html.erb
	modified:   lib/assets/stylesheets/surveyor_gui/surveyor_gui.sass