create tutorial based on project type

[TahiraU]

The python script that creates a tutorial, should create a tutorial based on a json projecName not projectType.

Right now the build_area_tutorial.py takes only 1 as projecType. But what if we want to have a completness projectType? In case of that the build_area_tutorial.py needs an urlB for the osm building layer.

The solution might be an additional key/value pair in the json file that refers to the actual projectType. Something like:

"projectName": "completeness"