Add links to an End Entity's certificates in the RA EE Search page.

The RA currently has two search pages, one for EEs and one for Certificates. Customer has requested (very reasonably) that once an EE has been selected from the search page, that there be a way of directly viewing their certificates.

I suggest solving this in one of the following ways:
1) Enumerating the EE's certificates on the "End Entity Details"-page (perhaps by lifting out some of the code from the Certificate search page?)
2) Adding a link directly to the Certificate search page