fix prevtab, so that it moves to the prev tab. Also, prevent the page from jumping around when moving tabs
fix prevtab, so that it moves to the prev tab. Also, prevent the page from jumping around when moving tabs

scotthue/unicycling-registration,rdunlop/unicycling-registration,rdunlop/unicycling-registration,rdunlop/unicycling-registration,scotthue/unicycling-registration,scotthue/unicycling-registration,rdunlop/unicycling-registration