Add callback function to render() method. Provides debug output to indicate how long each page took to render, plus keeps page loading spinner visible until the page has been rendered fully.
Add callback function to render() method. Provides debug output to indicate how long each page took to render, plus keeps page loading spinner visible until the page has been rendered fully.

git-svn-id: d71704da40e819af2ba9ff15fdfd08baa69d9f90@1369 a3f5c567-fd0f-3a89-9b71-a290c5a5f590

share-extras/media-viewers,loftuxab/media-viewers,loftuxab/media-viewers,horelvis/media-viewers,bforest/media-viewers,bforest/media-viewers,jberthoux/media-viewers,horelvis/media-viewers,loftuxab/media-viewers,jberthoux/media-viewers,loftuxab/media-viewers