[Imports] Sardinia Regional Dataset Building Import: second proposal

[Leonardo]

The final proposal is ready: 
https://wiki.openstreetmap.org/wiki/Sardegna/Import/Edificato

Addresses will be treaded in a future import proposal.

About any possible automation please remember that we are not talking 
about an extremely dense cities like NY and we prefer doing manual check 
on the existing data. Take example here:

http://www.openstreetmap.org/relation/39970#map=12/39.5760/9.3779

We have many small towns without any data or little data, that can be 
checked manually. The biggest ones (like Cagliari) will be treated in 
the end of the import. Another point is that we contacted the sardinian 
community but many of them aren't postGIS expert or even know what is 
it, so you can't ask everyone to learn to use that tool (in fact, using 
an automated methods create far more damages than doing a manual check 
and upload, if you don't know what are you doing).

The workflow for the import will be like that:

-Open the received .osm
-Download the data from osm
-Check for integration and errors
-Upload the modifications on the downloaded data OSM
-Lastly upload the import data

On this way, there is no need for reprocessing the data.

About number of nodes, the towns are about 5000 to 15000 nodes each, and 
we will use the "Upload the data in chunks of objects" option on JOSM, 
with value of 250. This method was already used on previous Veneto 
imports and worked nicely.

If there are no concern and have a good consensus from this list, we 
will start distributing the data to the importers.  The 
ready-to-be-uploaded .osm files will be posted on the same page of the 
wiki.

Thanks for all the feedback, especially Jason Remillard.

Regards,

Leonardo