Bug 12045 - Transfer impossible if barcode includes spaces

 Bug 12045 - Transfer impossible if barcode includes spaces

have changed the code which strips the white space to only remove the leading and trailing white space instead

To Test-
1- go to circulation -> transfer
2- attempt to tranfer an item where the barcode has a space in the middle of it
3- it should fail
4- apply patch
5- try again
6- it should work

NOTE: I purposefully added: die "($barcode)";
      Before, all spaces were removed.
          '    white space    ' became '(whitespace)'
      After, only external spaces were remove
          '    white space    ' became '(white space)'

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>