clermont-ici: hide nav for child and exclude_from_navigation pages (#55788)

static/clermont-ici/_custom.scss

@@ -113,6 +113,9 @@ h1#logo.has-logo {
 //
 //	NAV
 //
+body.hide-navigation .site-nav {
+	display: none;
+}
 .nav-btn {
 	display: inline-block;
 	line-height: 1;

templates/variants/clermont-ici/combo/page_template.html

@@ -7,6 +7,16 @@
   }
 }
 {% endblock %}
+
+{% block bodyclasses %}
+	{{ block.super }}
+	{% if not page.exclude_from_navigation and page.parent is None  %}
+		show-navigation
+	{% else %}
+		hide-navigation
+	{% endif %}
+{% endblock %}
+
 {% block content-pre %}
 <div class="community-header desktop-only">
 	{% placeholder "hero-page" name="Image de la Page" %}
@@ -28,7 +38,7 @@
 
 {% block menu %}
 	<h2 class="nav--title">vous êtes :</h2>
-    {{ block.super }}
+	{{ block.super }}
 {% endblock %}
 
 {% block columns-top %}