Bug 11227: remove some JavaScript from staff PO files

Bug 11227: remove some JavaScript from staff PO files

This patch rewrites authorities_js.inc so translate
script will process it correctly. To do that I added
<script></script> at the file

To test:
1) Update po files for your preffered language

2) Check occurrence of mergeAuth on staff PO file
or try
egrep -n  "Merging with authority: |Cancel merge"
strings appear in a JS func

3) Apply the patch

4) Update translations again, check again, old
strings now begin with #~ (obsoleted) and there
are new entries for the messages

5) Check functionality provided by script

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described and fixes a translation difficulty.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>