enhance dataset browser item view with additional metadata

[Andrew Su]

As closely as possible, show the same information and format as shown in dataset search (e.g., http://dev.biogps.org/search/?q=in%3Adataset+cancer).

Depends on implementation of https://bitbucket.org/sulab/biogps_core/issue/11/add-more-dataset-metadata-to-search-api.