feat: Use `raw_id_fields` to make search easier
Improves selection of bank
and invoice
on django admin.
Tests are failing and I don't know why, this is a simple 2 line change django admin code.
Not sure who should review this, so I'm pinging a lot of people: @antoviaque, @itsjeyd and @gabor-boros.
Edited by Giovanni Cimolin da Silva