Fixed bug: workers trying to drop off an item at a full building will instead consider working inside a building. This also solves a softlock state with Manual Labor modifier, where a building was full, not producing anything, and all workers were stuck trying to drop off items
Added icons for Grow Grass, Cut Grass, and Paint Terrain
Trains now account Blockers and Filter blocks on rail tracks. The path validity is calculated when they start moving, it doesn’t yet take into account changes that happen while the train is moving.
Fixed bug: Water Pumps were not operating unless they had rotational power supplied (this is supposed to be true if "Manual Labor" modifier is on, but it was being applied to games without this modifier as well)