fixed mistaken removal of shift/ctrl buttons on mobiles for file* views

templates/files.html

@@ -327,5 +327,11 @@
         $('#viewer_del').on('click', function() { DelDBox('Restore') } )
     }
 
+    if( isMobile() )
+    {
+        $('#shift-key').css('visibility', 'visible');
+        $('#ctrl-key').css('visibility', 'visible');
+    }
+
 </script>
 {% endblock script_content %}