MAPG-196 speed up asset loading, add missing description, add missing image alts

views/templates/layout_full.php

@@ -4,7 +4,7 @@
 <header class="small">
     <h1>
         <a href="/" title="<?= $_ENV['APP_NAME'] ?>">
-            <img class="inline" width="1em" height="1em" src="<?= $_ENV['STATIC_ROOT'] ?>/img/icon.svg?rev=<?= REVISION ?>"><!--
+            <img class="inline" width="1em" height="1em" src="<?= $_ENV['STATIC_ROOT'] ?>/img/icon.svg?rev=<?= REVISION ?>" alt="<?= $_ENV['APP_NAME'] ?>"><!--
          --><span><?= $_ENV['APP_NAME'] ?></span>
         </a>
     </h1>