Scanning Handling Unit in Listview should filter instead of route

[agritheory]

Current design:

Scanned Doctype	Listview	Action	Target
Handling Unit	Delivery Note	route	Delivery Note
Handling Unit	Item	route	Item
Handling Unit	Packing Slip	route	Packing Slip
Handling Unit	Purchase Invoice	route	Purchase Invoice
Handling Unit	Purchase Receipt	route	Purchase Receipt
Handling Unit	Putaway Rule	filter	item_code
Handling Unit	Quality Inspection	filter	handling_unit
Handling Unit	Sales Invoice	route	Sales Invoice
Handling Unit	Stock Entry	route	Stock Entry
Handling Unit	Stock Reconciliation	route	Stock Reconciliation

Should be:	Scanned Doctype	Listview	Action	Target
Handling Unit	Delivery Note	filter	Delivery Note
Handling Unit	Item	route	Item
Handling Unit	Packing Slip	filter	Packing Slip
Handling Unit	Purchase Invoice	filter	Purchase Invoice
Handling Unit	Purchase Receipt	route	Purchase Receipt
Handling Unit	Putaway Rule	filter	item_code
Handling Unit	Quality Inspection	filter	handling_unit
Handling Unit	Sales Invoice	filter	Sales Invoice
Handling Unit	Stock Entry	filter	Stock Entry
Handling Unit	Stock Reconciliation	filter	Stock Reconciliation

Where Handing Units generally support net quantities, this isn't the case in a Purchase Receipt, nor for an Item sine in both those cases they can only refer to one (valid) record.