Fixes after merge on geotrek rando
Merge pull request #25 from leplatrem/master

Fixes after merge on geotrek rando
remove global variables in index.js file
wip sides
3D sides added (ref #19)
merging
Merge branch 'master' into dem_subdivided
merging
merging done
Drape trek over tiled DEM wip (ref #29)
refac