Link out to applications that use datasets, from the survey

[morchickit]

For example, if someone is using budget data for an application (like open spending), add a link to this application.

[pwalsh]

As a {Product Owner}, I want to link out to apps in the space that target certain datasets, so I can make census a hub from which to explore open data apps and portals.

[pwalsh]

Added user story back here.

[morchickit]

As the index researcher, I want to link the dataset to applications that uses the dataset, so other people can learn what was done with the data (even if it's not a scored question)