Several Resources Need Indivisible Flag

An "Indivisible" flag needs to be implemented for resources and set for some resources. Namely Lifesupport and Empty Canisters, along with some of the salvage resources.

Currently, Suit Dispensers can be filled with decimal amounts of canisters, which binary fucks up on and displays as 899.999999999997.

NOTE: This is ported from the original Space Combat 2 repo, it is possible that we'll not be using Lifesupport Canisters and such moving forward, but other resources exist that should not be divisible.