Move /downloads/logos to /community/logos

We're renaming the download page to /install, so the logos page has
to go somewhere. Reasons to move it to /community:

- That's what Python does https://www.python.org/community/logos/
- I think the About section needs to be reworked, so it may not exist
  in the future

Author: jvns

content/about/free-and-open-source.html

@@ -17,7 +17,7 @@ <h2>Free and Open Source</h2>
 	free for all its users.</p>
 
     <p>However, we do restrict the use of the term "Git" and the
-       <a href="{{< relurl "downloads/logos" >}}">logos</a> to avoid confusion. Please
+       <a href="{{< relurl "community/logos" >}}">logos</a> to avoid confusion. Please
        see our <a href="{{< relurl "trademark" >}}">trademark</a> policy for
        details.</p>
 

content/about/trademark.html

@@ -38,7 +38,7 @@ <h3>1 Purpose</h3>
   <ul>
   <li><p>The literal mark "Git"</p></li>
   <li><p>The logos and graphic marks displayed and available for
-  download at <a href="https://git-scm.com/downloads/logos">https://git-scm.com/downloads/logos</a></p></li>
+  download at <a href="https://git-scm.com/community/logos">https://git-scm.com/community/logos</a></p></li>
   <li><p>The slogan "the stupid content tracker"</p></li>
   </ul>
 

content/downloads/logos/_index.html renamed to content/community/logos.html

@@ -1,10 +1,12 @@
 ---
-section: "downloads"
+section: "community"
 subsection: "logos"
 title: "Git - Logo Downloads"
-url: /downloads/logos.html
+url: /community/logos.html
 aliases:
+- /community/logos/index.html
 - /downloads/logos/index.html
+- /downloads/logos.html
 ---
 
 <div id="main">

layouts/partials/sidebar.html

@@ -58,6 +58,13 @@
       </li>
       <li>
         <a href="{{ relURL "community" }}"{{ if (eq $section "community") }} class="active"{{ end }}>Community</a>
+        <ul{{ if (eq $section "community") }} class="expanded"{{ end }}>
+          {{ if (eq $section "community") }}
+          <li>
+            <a href="{{ relURL "community/logos" }}"{{ if (eq .Params.subsection "logos") }} class="active"{{ end }}>Logos</a>
+          </li>
+          {{ end }}
+        </ul>
       </li>
     </ul>