Add a separate function for each property which saves necessary
information independently. Simplify computation of labels and
simple labels to not explicitly save the labels.
If for a boundary the place_type is defined, handle the address
part like a place node. This is the same behaviour as before
when class/type where patched earlier.
Introduces new AddressDetails class which is responsible
for address lookups. Saves always the complete result
and then allows filtering throught the different access
function. Remove special handling in Geocode() and use
there the lookup throught PlaceLookup() as well.
