Update sponsors

Author: jonaharagon

_includes/head.html

@@ -61,5 +61,5 @@
 
   <!-- CSS stylesheets -->
   <link href="/assets/css/style.css?v=9" rel="stylesheet">
-  <link id="dark-css" href="/assets/css/dark.css?v=4" rel="stylesheet" media="(prefers-color-scheme: dark)">
+  {% unless page.url == '/sponsors/' %}<link id="dark-css" href="/assets/css/dark.css?v=4" rel="stylesheet" media="(prefers-color-scheme: dark)">{% endunless %}
 </head>

_includes/nav.html

@@ -113,7 +113,7 @@
         </a>
         <a href="/about/" class="nav-anchor">
           About Us
-        </a>
+        </a>{% unless page.url == '/sponsors/' %}
         <span id="nav-switch-theme" class="nav-anchor">
           <span class="nav-theme-icon fas fa-fw" aria-hidden="true" title="Theme"></span>
           <span class="sr-only">Toggle Theme</span>
@@ -138,7 +138,7 @@
             <a href="https://privacytools.ru" rel="nofollow noopener" class="dropdown-item">Русский</a>
             <a href="https://privacytools.dreads-unlock.fr" rel="nofollow noopener" class="dropdown-item">Français</a>
           </span>
-        </details>
+        </details>{% endunless %}
       </div>
     </div>
   </div>

_includes/sponsors/gold.html

@@ -2,14 +2,15 @@
   <a class="m-3" href="https://safing.io" target="_blank" rel="noreferrer">
     <img
       src="/assets/img/svg/3rd-party/sponsors/safing.svg"
-      data-theme-src="/assets/img/svg/3rd-party/sponsors/safing-dark.svg"
+      {% unless page.url == '/sponsors/' %}data-theme-src="/assets/img/svg/3rd-party/sponsors/safing-dark.svg"{% endunless %}
       height="70rem"
       title="Safing Privacy Network - Launching on Kickstarter January 2nd, 2020"
       alt="Safing Privacy Network - Safing.io Logo" />
   </a>
   <a class="m-3" href="https://www.oeck.com" target="_blank" rel="noreferrer">
     <img
       src="/assets/img/png/3rd-party/sponsors/oeck.png"
+      {% unless page.url == '/sponsors/' %}data-theme-src="/assets/img/png/3rd-party/sponsors/oeck-dark.png"{% endunless %}
       height="70rem"
       title="Oeck - A new type of VPN - Unique, fast and private."
       alt="Insurgo Logo" />