Bug 11638: Remove HTML from addbiblio.pl

Bug 11638: Remove HTML from addbiblio.pl

This patch extracts variables with HTML from addbiblio.pl
and an instance of CGI::scrolling_list

As it changes how MARC editor show input fields, I prefer
not add patches for other cases mentioned on Comment #1

To test:
1. Verify there are no regressions on MARC editor
Add/Edit records, modify values
2. Update translation file for a language,
check new string 'Tag editor'

About the error message on error when deleting biblio,
it must be localized but the script is not trying to
use a template file, only prints a basic html and aborts.
Perhaps a way of handling errors more gracefully is needed,
but again it need to be solved on it's own bug.

Updated test plan

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>