Bug 30130: Use new standard field in account definition

Bug 30130: Use new standard field in account definition

This patch uses the new 'standard' field to in the edifact account
configuration area to allow setting the message standard as either
'EDItEUR' or 'BiC'.

This just replaces the currently hard coded hash of SAN's in
Koha::Edifact::Order to distinguish between the two standards instead of
requireing a bug submission per vender san we identify to be a BiC type
vendor.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>