gitweb: Add error text to error page

templates/gitweb/error.tmpl

@@ -13,10 +13,11
 <a href="{url}summary{getentries}">summary</a> | <a href="{url}shortlog{getentries}">shortlog</a> | <a href="{url}log{getentries}">changelog</a> | <a href="{url}tags{getentries}">tags</a> | <a href="{url}file/#node|short#{getentries}">manifest</a><br/>
 </div>
 
-<div>
+<div class="page_body">
 <br/>
 <i>An error occured while processing your request</i><br/>
 <br/>
+{error|escape}
 </div>
 
 #footer#