Fix media manager height handling after resize FS#2369

The height handling code was triggered before the width handling code
and thus the right pane was below the other panes during the height
calculations which caused strange effects. Now the height handling code
is called again after adjusting the width of the right pane.

lib/scripts/media.js

@@ -514,6 +514,8 @@ var dw_mediamanager = {
                     });
                 }
 
+                dw_mediamanager.resize();
+
                 dw_mediamanager.opacity_slider();
                 dw_mediamanager.portions_slider();
             }