Merge remote-tracking branch 'origin/release/5.1' into release/5.1

@@ -692,7 +692,7 @@ $yohoPage.on('touchstart', '.btn-minus', function() {
                     var thisSkn = $('#productSkn').val();
                     var thisSku = '';
 
-                    thisSku = $('.size-row:last').find('.chosed').attr('data-skuid');
+                    thisSku = $('.size-list').find('.chosed').attr('data-skuid');
 
                     window.location.href = '/cart/seckill?skn=' + thisSkn + '&sku=' + thisSku;
                 }