documentation: add crow_fly description
Documentation: add image for crow_fly sections
Documentation: add stay_in section
Documentation: add stay_in section
Jormungandr: moved geojson to fields
Kraken: Add geojson to route_schedules
Fix destionation to destination
Documentation: change stay_in and crow_fly schemas
Documentation: ajustement
ed: rewrite the generation of connections
Merge pull request #540 from l-vincent-l/fix_destionation

Fix destionation to destination
Protobuf: change type of geojson length to double
ed: add a default connection of 2 min from a stop point to itself if not provided
routing: do not use an implicit connection of 2 min from a stop point to itself

Connections from a stop point to itself need now to be explicit in the data.

WARNING: import to ed take care to add a connection if there is none, but if
you make your own import, take care of that!
Merge pull request #488 from l-vincent-l/geojson_routes

Geojson routes
Merge pull request #541 from TeXitoi/connection-to-itself

Connection to itself
kraken: fix crash of worker on airport data

The protobuf was malformed, we updated the boarding section in place of
the public transport section
Fusio2ed: load fare by default
Merge pull request #543 from kinnou02/fix_segfault_on_stayin

kraken: fix crash of worker on airport data
Fusio2Ed: cout on version