Issue 199

I tested this by altering the demo database that we usually create.  I added some pubmed IDs for real publications to some of the studies and verified that links were created properly. I also added another user and shared a study with him, and verified that the shared with column displays properly (with mailto link), and that the study shows up in the correct place in the private studies page.

This address issue #199 because it adds the relevant columns to the jquery dataTables on the studies pages, making them searchable by default.