Changes the sink/reagent dispenser (i.e. water tanks)' filling system to
be intent-based rather than opening a window every time. Should make
filling/emptying containers at least 10x quicker. :)
Use **HELP** intent to fill from a container. Any other intent (i.e.
HARM) will have you try to empty the container into the dispenser/sink
instead.
Additional examination info has been added to both the sink and reagent
dispensers to give such information.
