feat(nav): refactor primary navigation to split labels + icons; remove redundant nav code

src/includes/nav/link.liquid

@@ -14,7 +14,7 @@
   </span>
 {%- else -%}
   <a
-    class="{% if link.icon %}{{ link.icon | downcase }} icon {% endif %}{{ link.class }}"
+    class="{% if link.section %}{{ link.section | downcase }} {% endif %}{% if link.icon %}{{ link.icon | downcase }} icon {% endif %}{{ link.class }}"
     href="{{ categoryUrl }}"
     {% if isHttp -%} rel="me" {%- endif %}
     title="{{ link.title }}"

src/includes/nav/menu.liquid

@@ -0,0 +1,11 @@
+<nav class="{{ class }}">
+  {%- for link in nav -%}
+    {% render "nav/link.liquid",
+      page:page,
+      link:link
+    %}
+    {%- if separator -%}
+      {% unless forloop.last %}<span>•</span>{% endunless %}
+    {%- endif -%}
+  {%- endfor -%}
+</nav>

src/includes/nav/primary.liquid

@@ -1,12 +0,0 @@
-<nav class="primary-navigation">
-  <ul class="nav-list">
-    {%- for link in nav.primary -%}
-      <li>
-        {% render "nav/link.liquid",
-          page:page,
-          link:link
-        %}
-      </li>
-    {%- endfor -%}
-  </ul>
-</nav>

src/includes/nav/secondary.liquid

@@ -1,9 +0,0 @@
-<nav aria-label="Secondary site navigation" class="sub-pages">
-  {%- for link in links -%}
-    {% render "nav/link.liquid",
-      page:page,
-      link:link
-    %}
-    {% unless forloop.last %}<span>•</span>{% endunless %}
-  {%- endfor -%}
-</nav>

src/includes/nav/social.liquid

@@ -1,8 +0,0 @@
-<nav aria-label="Social icons" class="social">
-  {%- for link in links -%}
-    {% render "nav/link.liquid",
-      page:page,
-      link:link
-    %}
-  {%- endfor -%}
-</nav>