Add placeholder alt text for all images.

pages/media.php

@@ -12,7 +12,7 @@
 		<div class="row">
 			<h1 class="col-12 title">Media</h1>
 			<div class="col-12 header center" >
-				<img src="/files/media/icons/videos.jpg" alt="">
+				<img src="/files/media/icons/videos.jpg" alt="<<videos.jpg>>">
 			</div>
 		</div>
 		<div class="row">