Make sure notifications are always visible.

fix #549

modoboa/static/js/notify.js

@@ -15,7 +15,7 @@
                 id: bid,
                 click: $.proxy(this.destroy_box, this)
             }).css({
-                position: "absolute"
+                position: "fixed"
             });
 
             return div;
@@ -101,4 +101,4 @@
         top_position: 50
     };
 
-})(jQuery);
+})(jQuery);

modoboa/static/js/twocols_nav.js

@@ -130,4 +130,4 @@ TwocolsNav.prototype = {
     }
 };
 
-TwocolsNav.prototype = $.extend({}, Listing.prototype, TwocolsNav.prototype);
+TwocolsNav.prototype = $.extend({}, Listing.prototype, TwocolsNav.prototype);