6/8 -- Environment update/small fixes

I think the new assets blew up the binary size a bit. It should not be that much though, I will have to reign that back in a bit.... it seems incorrect.

The swamp should be a bit more filled out now though, but I probably need to do some optimizing again as a result.

Also a number of small changes.

- Necklace of Immunity - The Poison Resist potion which was permanent makes more sense as equipment.
- Some glitchy surfaces and misleading geometry fixed/removed.
- Choosing the portal you are at should not have a transition. simple exit instead

I am going to tune things up a bit more and push this into another scheduled playtest, it's just been too long since the last one and we need to see where it stands. If there's anything glaring or annoying, really any feedback at all, please let me know so I can tighten it down.

Thanks! -MQ