Added search for link

The search function works. (Yayyyy) However, there are two major
problems
1. link_message is stored correctly so that’s good, but neither the
link_description or link_name are stored in the database so I can’t do
any retrieval based on that - need to figure out how to correctly save
these two properties.
2. Using the fb Graph API I am getting at most 7 links. Need to figure
out how to retrieve all links shared.