Viewbox not working

[raphink]

As I told you on IRC, the viewbox parameter doesn't seem to be honored:

http://nominatim.openstreetmap.org/search.php?q=royan&viewbox=51.94,36.59,51.99,36.56

returns Royan, France by default, even though this viewbox is precisely centered on Royan, Iran.

[raphink]

This issue is still present. Another example with Lyon:

http://nominatim.openstreetmap.org/search.php?q=lyon&viewbox=3.77%2C46.13%2C5.74%2C45.26

[lonvia]

Search was taking the viewbox into account but the final ranking of the results was not. I've now built in some additional adaption of the importance ranking according to viewbox, at the moment only for testing on osm.org. It might return unexpected results for well-known cities, i.e. when searching for Lyon, I'd always expect the French city to turn up not some barely inhabited American county, even if the map view is pointing to the US. Let's see if there are any complaints.

[lonvia]

There were no complaints so far. If there are no other objections I'll merge the relevant changes into the main branch in a short while.