Fix DisplayNotFound page

- Add another condition earlier in Module\Item\Display
- Separate reasons in individual translation strings

view/templates/special/displaynotfound.tpl

@@ -1,5 +1,11 @@
 <div id="exception" class="generic-page-wrapper">
 	<img class="hare" src="images/friendica-404_svg_flexy-o-hare.png"/>
-	<h1>{{$title}}</h1>
-	{{$message nofilter}}
+	<h1>{{$l10n.title}}</h1>
+	<p>{{$l10n.desc1}}</p>
+	<p>{{$l10n.desc2}}</p>
+	<ul>
+{{foreach $l10n.reasons as $reason}}
+		<li>{{$reason}}</li>
+{{/foreach}}
+	</ul>
 </div>