allow worn welding goggles to be used in veh_interact.cpp
Remove non-functional nanosleep code that was lagging when flinging monsters.
Fixes #3848
Merge pull request #5231 from kevingranade/fix-vehicle-collision-lag

Remove non-functional nanosleep code that was lagging when flinging monsters.
Merge pull request #5230 from BevapDin/fix-usage-of-goggles

allow worn welding goggles to be used in veh_interact.cpp
Recategorization of waterskin and stone knife

Moves waterskin to Other -> Containers and stone knife to Other -> Tools.
Merge pull request #5234 from MisterFelixFox/tiny-recategorize

Recategorization of waterskin and stone knife