Fix foundation dropdown

This commit fixes the dropdown placement for the entities list. The current version of foundation.js on master has an issue with correctly placing dropdowns relative to it's intended target. This is discussed in further detail on [this issue for Zurb Foundation](https://github.com/zurb/foundation/issues/1789).

### Current on Master
Chrome (v28)
![screen shot 2013-07-17 at 6 17 30 pm](https://f.cloud.github.com/assets/997161/815979/3e5c411a-ef36-11e2-9607-8b1f69ae9cd9.png)

Safari (v6)
![screen shot 2013-07-17 at 6 18 36 pm](https://f.cloud.github.com/assets/997161/815984/4b2cf25e-ef36-11e2-8c35-03373e5a53a8.png)

Firefox (v22)
![screen shot 2013-07-17 at 6 20 02 pm](https://f.cloud.github.com/assets/997161/815987/55f67390-ef36-11e2-9957-ba51e8bf52ed.png)


### After Changes
Chrome (v28)
![screen shot 2013-07-17 at 7 15 31 pm](https://f.cloud.github.com/assets/997161/816019/e6a7d244-ef36-11e2-942a-7bcefdc426d5.png)

Safari (v6)
![screen shot 2013-07-17 at 7 04 16 pm](https://f.cloud.github.com/assets/997161/816022/fda5f372-ef36-11e2-8b78-4c200a713aa4.png)

Firefox (v22)
![screen shot 2013-07-17 at 7 04 26 pm](https://f.cloud.github.com/assets/997161/816025/0f2ead00-ef37-11e2-9804-993df75d9e97.png)