Added Refworks link and Notes text fields.

If there is a link to Refworks it will show beside the (?) for the
Description as well as if there are any additional notes or issue with
the database, they will be displayed.

Signed-off-by: Dan Scott <dscott@laurentian.ca>
Tuck RefWorks info under the hidden "(?)" block

Let's keep using the hidden description field to hold extraneous
information, like the link for "Exporting to RefWorks" instructions.

Signed-off-by: Dan Scott <dscott@laurentian.ca>