Expected behavior

Citizens walk faster on specific blocks like:
-gravel
-stone bricks
-grass path block
citizens prefer to walk on paths because it's faster

Actual behaviour

normal (slow) walking speed regardless of which block they are walking on and weird pathfinding sometimes.

Steps to reproduce the problem

just watch the citizens for example the builder when he's building something and needs materials.
Then he goes back to his hut. And then back to the cunstruction area.

Somewhat duplicate of #20

nope it's not.
#20: automaticly build road/path
#210: citizens walk faster on these roads/paths