Issue NuCivic/dkan#136: Adding download link next to explore data link f...

...or each resource in dataset page

Issue NuCivic/dkan#136

## Acceptance Test

You need to see the download button next to 'Explore Data'

![screen shot 2014-06-18 at 3 46 43 pm](https://cloud.githubusercontent.com/assets/428070/3319527/5f642faa-f721-11e3-9fcb-07a63a3554b1.png)