Switch path and topologies geometries to 2D (ref #688)
Migrate tools to 2D geometries (ref #688)
Fix tests after migration to 2D (ref #688)
Move geom_3d definition to AltimetryMixin (ref #688)
Merge migrations and add geom_3d intervention (ref #688)
Use geom_3d instead DEM in order to build altimetric profile (ref #688)
Remove dead code (ref #688)
Merge pull request #828 from makinacorpus/switch_to_geom_2d

Switch to path and topologies geometries to 2D