add aria attributes to carousel rel #213
add aria attributes to carousel
rel #213

manuelroth/styleguide,ComperioAG/styleguide_mont-terri,manuelroth/styleguide,swiss/styleguide,swiss/styleguide,ComperioAG/styleguide_geologieportal,manuelroth/styleguide,RolandStuder/styleguide,RolandStuder/styleguide,ComperioAG/styleguide_geologieportal,RolandStuder/styleguide,ComperioAG/styleguide_mont-terri