Patch from Benjamin Shum for the staff client button bar. Thanks!

Patch from Benjamin Shum for the staff client button bar.  Thanks!
---
In our consortium, we have the Button Bar for our Evergreen staff
clients enabled all the time.  As a result, we have had lots of feedback
from users that there is a need to include a "Search Catalog" option on
the Button Bar.

This is our first attempt at writing something against trunk and
submitting it as a minor patch.  Melissa Lefebvre created the icon for
the button by adapting existing icon sets.  I set out to create the
requisite .diff file against a recent copy of trunk.  I was unsure of
how to apply our changes to other locales' lang.dtd files, the one I
found most immediately was for en-US (our default).

If the community approves, we would like to see this become part of
future releases of Evergreen 1.6 and 2.0.

Thank you for your consideration.

-- Ben

--
Benjamin Shum
Open Source Software Coordinator
Bibliomation, Inc.
32 Crest Road
Middlebury, CT 06762
203-577-4070, ext. 113

git-svn-id: svn://svn.open-ils.org/ILS/trunk@18609 dcc99617-32d9-48b4-a31d-7c20da2025e4