Make the titles of blocks able to be a URL to viewing more information about...

Make the titles of blocks able to be a URL to viewing more information about the artefact inside them.

htdocs/theme/default/templates/view/blocktypecontainerviewing.tpl

     <div class="blockinstance" id="blockinstance_{$id}">
         {if $title}<div class="blockinstance-header">
-            <h4>{$title | escape}</h4>
+            <h4>{if $viewartefacturl}<a href="{$viewartefacturl|escape}">{/if}{$title|escape}{if $viewartefacturl}</a>{/if}</h4>
         </div>{/if}
         <div class="blockinstance-content">
             {$content}