JBAS-2186 XUL Find authority by ID fix

JBAS-2186 XUL Find authority by ID fix

Cross-porting dfdf183 from origin's copy of list.js to list_id.js

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LP#1638299: adjust staff-side authority browse

Now that the primary key of the authority.thesarus table
has changed from the single-character code to the LC-assigned
authority code, a bit of additional translation is required.

Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>
Signed-off-by: Kathy Lussier <klussier@masslnc.org>
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Signed-off-by: Bill Erickson <berickxx@gmail.com>