filter photon search by street if query is an address (first basic version)

work on issue #1230

this is a first version:

• we look for street keywords in the query : rue, avenue, boulevard, ...
• if match, we add layer=street to the photon query

It solves the bug when housenumber is missing in OSM, since it forces the search in street names

But it is not fully satisfactory since other places with "avenue" in their names won't be found, for example this hairdresser "11e avenue", because the search will be made only in streets.