test ui

src/partials/nav.hbs

 <div class="nav-container"{{#if page.component}} data-component="{{page.component.name}}" data-version="{{page.version}}"{{/if}}>
   <aside class="nav">
     <div class="panels">
-{{!-- {{> page-versions}} --}}
+{{> page-versions}}
 {{> nav-menu}}
 {{> nav-explore}}
     </div>

src/partials/page-versions.hbs

-{{!-- {{#with page.versions}} --}}
-{{#if page.component}}
+{{!-- {{#if page.component}}
 <div class="page-versions">
   <div class="backdrop"></div>
   <h2 class="title"><a href="{{{relativize ./url}}}">{{page.component.title}}</a></h2>
-  <button class="version-menu-toggle" title="Show other versions of page">{{#if (or page.componentVersion.version (ne page.componentVersion.displayVersion 'default'))}}v{{page.componentVersion.displayVersion}}{{/if}}</button>
+  <button class="version-menu-toggle" title="Show other versions of page">
+    {{#if (or page.componentVersion.version (ne page.componentVersion.displayVersion 'default'))}}
+      v{{page.componentVersion.displayVersion}}
+    {{/if}}
+  </button>
   {{#with site.components.[0]}}
+  {{#if (or ./versions.[1] ./versions.[0].version (ne ./versions.[0].displayVersion 'default'))}}
   <div class="version-menu">
     {{#each ./versions}}
     <a class="version
-      {{!-- {{~#if (eq ./version @root.page.version)}} is-current{{/if~}} --}}
       {{~#if (and (eq .. @root.page.component) (eq this @root.page.componentVersion))}} is-current{{/if~}}
-      {{~#if ./missing}} is-missing{{/if}}" href="{{{relativize ./url}}}">v{{./displayVersion}}</a>
+      {{~#if ./missing}} is-missing{{/if}}" href="{{{relativize ./url}}}">
+      v{{./displayVersion}}
+    </a>
     {{/each}}
   </div>
+  {{/if}}
   {{/with}}
 </div>
-{{/if}}
+{{/if}} --}}
+{{!-- {{#with page.versions}} --}}
+<div class="page-versions">
+  <button class="version-menu-toggle" title="Show other versions of page">{{@root.page.componentVersion.displayVersion}}</button>
+  <div class="version-menu">
+    {{#each this}}
+    <a class="version
+      {{~#if (eq ./version @root.page.version)}} is-current{{/if~}}
+      {{~#if ./missing}} is-missing{{/if}}" href="{{{relativize ./url}}}">{{./displayVersion}}</a>
+    {{/each}}
+  </div>
+</div>
 {{!-- {{/with}} --}}