Added ripple

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/fork@1825 b32b6428-25c9-4566-ad07-03861ab6144f

apps/dashboard/xaal/dashboard/static/css/site.css

@@ -247,7 +247,8 @@ ul.menu li a:hover {
     transition: margin-left .5s;
     margin-left: 0em;
     margin-right: 0em;
-    margin-top: 8px;
+    /*margin-top: 8px;*/
+    margin-top:42px;
 }
 
 #content {