Changed the description of irradiated food items to show they are save to eat.
Fixed bug found by Voker57, can pick up (infinite) water w/o container if slaked.
Fixed lamp oil spawns.
Merge pull request #6210 from Soyweiser/Lamp_oil

Fixed lamp oil spawns.
Merge pull request #6207 from vidarsk/examine_pick_up_water_fix

Fixed bug found by Voker57, can pick up (infinite) water w/o container if slaked.
Merge pull request #6200 from Soyweiser/Irradiated

Food irradiation descriptions.