adding a fix to handle missing directories in the file browser in webkit browsers

On webkit browsers, the file directory browser does not display items sometimes due to a weird issue with the dom refreshes. Anyway, I fixed the issue by generating a fake scaling in the menu. This issue is happening on my mac in chrome and safari. Instead of creating a ticket I thought I'd fix it :) See the image I attached for what the problem was.

![screen shot 2014-11-10 at 7 04 59 pm](https://cloud.githubusercontent.com/assets/775255/4986854/accb5eca-6941-11e4-84bb-90f481d04a41.png)