Sort sections by weight

The current theme sorts sections by the title, which makes it tricky to
highlight particular sections. To make it easier, switch to use the
weight property.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>

themes/apertis/layouts/partials/nav.html

@@ -202,7 +202,8 @@
 <nav class="sidebar sidebar-hidden" id="site-sidebar">
     <ul>
     {{- $section := .FirstSection -}}
-    {{- range sort .Site.Sections.ByTitle -}}
+    {{- range .Site.Sections.GroupBy "Weight" "asc"}}
+    {{- range sort .Pages.ByTitle}}
         <li class="sidebar-section">
         <a href="{{ .Permalink | relLangURL }}" {{ if eq .FirstSection $section }}id="sidebar-focus" class="sidebar-focus"{{end}}>{{ .Title }}</a>
         <div class="sidebar-pages">
@@ -212,6 +213,7 @@
         </div>
         </li>
     {{- end -}}
+    {{- end -}}
     </ul>
 </nav>
 

themes/apertis/layouts/partials/prep-nested-menu.html

 <!-- see https://hugocodex.org/blog/creating-a-menu-with-nested-pages/-->
 {{- $out := dict -}}
-{{- range sort .Site.Sections.ByTitle -}}
+{{- range .Site.Sections.GroupBy "Weight" "asc"}}
+{{- range sort .Pages.ByTitle}}
     {{- with .Site.GetPage (print "/" .Section "/_index.md") -}}
         {{- $children := slice -}}
         {{- range .RegularPages -}}
@@ -14,4 +15,5 @@
         {{- $out = merge $out (dict .Section $children) -}}
     {{- end -}}
 {{- end -}}
+{{- end -}}
 {{- return $out -}}
\ No newline at end of file