Fix modal z-indexing issue

In chrome there is an issue with the modal shadow covering the delete modal:
![screen shot 2014-05-29 at 10 30 47 am](https://cloud.githubusercontent.com/assets/176113/3118651/457750ba-e73e-11e3-9933-4e316b7c6d97.png)
Moving the modal out one layer in the dom fixes this:
![screen shot 2014-05-29 at 10 30 27 am](https://cloud.githubusercontent.com/assets/176113/3118668/7753daae-e73e-11e3-8264-2d4ea7913477.png)