Authority popups are empty: fix dojo.query() usage

Authority popups are empty: fix dojo.query() usage

When you right-click on a controllable field to display the contents of
the matching authority records, the contents of the matching authority
records simply appear as empty grey boxes.

This is another case of needing to iterate over multiple values
separately rather than using one convenient CSS selector.

Signed-off-by: Dan Scott <dscott@laurentian.ca>
Signed-off-by: Bill Erickson <berick@esilibrary.com>