Add polygons_user table to store .poly from users
Drop first line of .poly file
Fix import_poly.py
Add support for ST_Union of an OSM relation and a user polygon
Bug fix in case the base polygon was removed from database
Add script to generate image with matplotlib
Add page to get OSM+user polygons
Switch to get_image.py from pre-generated pictures
Improve generation of image
Improve links for user polygons