[Talk-GB] Postcode finder updates - postal addresses, house maps and error maps

[Ed Avis]

The new error map is great, I'll add it to the set of 'lint' tools I keep an
eye on.  There is one false positive however:

'Postcode W9 is badly formed' - many streets are tagged with just the first
part of the postcode (the outbound code).  This is signed on the ground, and
is useful to disambiguate street names, so it ought not to be an error.
I think you are already allowing it on ways, but there are a few odd nodes
that have it, usually road junctions.  I wouldn't tag it on the junction node
myself, but if it's there then it is not wrong.

-- 
Ed Avis <eda at waniasset.com>