Bug 8508 - Holds to Pull : Library dropdown options are erroneously concatenated...

Bug 8508 - Holds to Pull : Library dropdown options are erroneously concatenated by br tags

This patch introduces a new javascript function that breaks apart option
strings that are erroneously concatenated by br tags. The split strings
are then checked against non-concatenated option strings, and pushed into
the option array if there is no duplication.

This function is nestled into the JQuery datatable function for populating
the drop-down menu.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>