refs #2174 do not link name of group

plugins/MultiSites/javascripts/multisites-site/multisites-site.html

 <tr ng-class="{'groupedWebsite': website.group, 'website': !website.group, 'group': website.isGroup}">
-    <td class="multisites-label label">
+    <td ng-if="!website.isGroup" class="multisites-label label">
         <a title="View reports" ng-href="index.php?module=CoreHome&action=index&date={{ date }}&period={{ period }}&idSite={{ website.idsite }}">{{ website.label }}</a>
 
-                <span style="width: 10px; margin-left:3px;">
-                <a target="_blank" ng-attr-title="{{ 'General_GoTo'|translate:website.url }}" ng-href="website.url"><img src="plugins/MultiSites/images/link.gif"/></a>
-                </span>
+        <span style="width: 10px; margin-left:3px;">
+            <a target="_blank" ng-attr-title="{{ 'General_GoTo'|translate:website.url }}" ng-href="website.url"><img src="plugins/MultiSites/images/link.gif"/></a>
+        </span>
+    </td>
+    <td ng-if="website.isGroup" class="multisites-label label">
+        {{ website.label }}
     </td>
     <td class="multisites-column">
         {{ website.nb_visits }}