LP1183340 selectivly apply editable funds sorting

Avoid sorting editable funds to the front of the fund list when there
are no org units at which the user has the ADMIN_ACQ_FUND permission.
Otherwise, we are sorting on an empty 'IN' list in pcrud, which results
in an error.

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Dan Wells <dbw2@calvin.edu>