fix(mobile): correctly sort pages in mobile sidebar (#1759)

Author: pierreneter

src/components/Site/Site.jsx

@@ -44,9 +44,17 @@ const Site = ({
             title: section.path.title,
             url: section.url,
             pages: section.pages.map(page => ({
+              file: page.file,
               title: page.file.title,
               url: page.url
-            }))
+            })).sort(({ file: { attributes: a }}, { file: { attributes: b }}) => {
+              let group1 = a.group.toLowerCase();
+              let group2 = b.group.toLowerCase();
+
+              if (group1 < group2) return -1;
+              if (group1 > group2) return 1;
+              return a.sort - b.sort;
+            })
           }))
       } />