SPR-950 changes for mobile header,

Bugfix edit Mode of document

css/area_nav-pagetools.less

@@ -41,6 +41,10 @@ nav#dokuwiki__pagetools {
         right: 8px;
     }
 
+    @media @screen_max-xxs {
+        display: none;
+    }
+
     ul {
         li {
             @page-tools_svg-size: 25px;