LP#2013223: quiet browser console noise from some AngularJS grids

LP#2013223: quiet browser console noise from some AngularJS grids

This patch quells console error noise from certain AngularJS grids.

To test
-------
[1] Go to the AngularJS Renew Items, Holds Shelf, or patron holds list
    pages.
[2] Note that the brower console has a lot of "TypeError: action.handler is undefined"
    error messages.
[3] Apply the patch and repeat step 1. This time, the "action.handler"
    errors should be gone.

Signed-off-by: Galen Charlton <gmc@equinoxOLI.org>
Signed-off-by: Stephanie Leary <stephanie.leary@equinoxoli.org>