Add parsing of OSM notes

[eMerzh]

OSM note should be added to OFM,

a feed is available here:

http://api.openstreetmap.org/api/0.6/notes/feed?bbox=4.362435,50.828869,4.36501,50.831248

See more info here

https://wiki.openstreetmap.org/wiki/Notes

[eMerzh]

See here instead
https://wiki.openstreetmap.org/wiki/API_v0.6#Map_Notes_API