Bug 31252: Advanced search in staff interface should call barcodedecode if the search...

Bug 31252: Advanced search in staff interface should call barcodedecode if the search index is a barcode

We should run any inputted barcode through barcodedecode before passing it to any subroutines.
This was missed during the initial development of bug 26351.

Test Plan:
1) Set itemBarcodeInputFilter to "Remove spaces from"
2) Browse to the staff side advanced search
3) Run a barcode search for "MY TEST"
4) Note the message returned is:
   No results match your search for 'bc,wrdl: "MY TEST"'.
5) Apply this patch
6) Restart all the things!
7) Repeat your search
8) Note the message returned is:
   No results match your search for 'bc,wrdl: "MYTEST"'.
9) Note the lack of the space between MY and TEST!

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>