Bug 6153: Display imprint subfields in order

Bug 6153: Display imprint subfields in order

Prior to this patch, the imprint (field 260) was displayed out-of-order on the
MARC21 XSLT record detail page. For example, the following data:
=260  \\$aNew York :$bHarper,$c2003$g(2005 printing)
Displayed as:
Harper, New York : 2003 (2005 printing)
Instead of:
New York : Harper, 2003 (2005 printing)

Even more problematically, the following data:
=260  \\$a[S.l. :$bs.n.],$c1860.
Displayed as:
s.n.], [S.l. : 1860
Instead of:
[S.l. : s.n.], 1860.

This patch changes the MARC21 OPAC Details display to display the imprint
subfields in the proper order (as the Results display already does).

Signed-off-by: Ian Walls <ian.walls@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>