urbsweb.mapa: generate ll parameter instead of hardcoding it

Otherwise it will break if multiple people is running the script.

Signed-off-by: Eduardo Habkost <ehabkost@raisama.net>
set image coordinate properties as float

Signed-off-by: Eduardo Habkost <ehabkost@raisama.net>
make sure coordinate request is finished before reading image

Just in case...

Signed-off-by: Eduardo Habkost <ehabkost@raisama.net>
full-map fetching code, filesystem-based data

Signed-off-by: Eduardo Habkost <ehabkost@raisama.net>
combine_images + make filenames sane (creating subdirectories)

Signed-off-by: Eduardo Habkost <ehabkost@raisama.net>
negen fetch code

Signed-off-by: Eduardo Habkost <ehabkost@raisama.net>
multiple changes on combine_images & others

Signed-off-by: Eduardo Habkost <ehabkost@raisama.net>