LP#1616220 Fixes for css errors that show up in the xul staff client console.

LP#1616220 Fixes for css errors that show up in the xul staff client console.

To test
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[1] In the XUL client, try various interfaces including acquisitions,
    the patron editor, the reporter, the library settings editor,
    serials management and patron surveys. Using the error console,
    verify that applying this patch slightly reduces the number of
    CSS warnings reported.
[2] Repeat step 1 using the web staff client, in particular while
    looking at the embedded acquisitions interfaces.

Signed-off-by: Josh Stompro <stomproj@larl.org>
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>