Fixing missing lang string in user accesslist report (Bug #1449350)

Change-Id: I51e835653670a6fb1643aed9871a31ff39dcaafa
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>

htdocs/theme/raw/templates/admin/users/accesslistitem.tpl

 {if $item.access}<div>{$item.access}</div>{/if}
 {foreach from=$item.accessgroups item=accessgroup name=ags}{strip}
   {if $accessgroup.accesstype == 'loggedin'}
-    {str tag="loggedin" section="view"}
+    {str tag="registeredusers" section="view"}
   {elseif $accessgroup.accesstype == 'public'}
     {str tag="public" section="view"}
   {elseif $accessgroup.accesstype == 'friends'}