Add external download path support

index.php

@@ -31,16 +31,29 @@
         NO MID NO FEED
       </p>
 
+      <?php if (empty($options[$os_guess]["download_path"])): ?>
+      <a class="recommended build disabled">
+        <div>
+          Download unavailable
+        </div>
+      </a>
+      <?php else: ?>
       <a class="recommended build" href="<?= $options[$os_guess]["download_path"] ?>" download="<?= $options[$os_guess]["download_filename"] ?>">
         <div>
-
           Download for <?= $options[$os_guess]["name"] ?>
         </div>
       </a>
+      <?php endif; ?>
 
+      <?php if ($display_other_builds): ?>
       <ul class="other-builds">
         <p>Other builds</p>
         <?php foreach($options as $os => $target): ?>
+        <?php
+          if (empty($target["download_path"])) {
+            continue;
+          }
+        ?>
         <li>
           <a class="other build" href="<?= $target["download_path"] ?>" download="<?= $target["download_filename"] ?>">
             <?= $target["name"] ?><span class="architecture"><?= $target["architecture"] ?></span>
@@ -48,6 +61,7 @@
         </li>
         <?php endforeach; ?>
       </ul>
+      <?php endif; ?>
     </main>
     <footer>
       <p>In case of any questions, message <a href="<?= $contact_link ?>"><?= $contact_name ?></a>.</p>