Potential error in classes generation for landmarks

[TimJentzsch]

For example, the Abbey of Kings:

data/buildings/english/abbey-of-kings-1.json

Lines 13 to 19 in 9078e94

	"classes": [
	"age",
	"ii",
	"-",
	"religious",
	"landmark"
	],

I assume it has been generated via a simple string splitting technique, which doesn't seem to work properly here (the displayClass is "Age II - Religious Landmark").

Instead, I would expect something like ["age 2", "religious", "landmark"] or something similar.