Weapons used at melee range no longer embed.

Melee weapons will no longer embed when hitting people directly with
them.

Note that items that are thrown and projectiles will still embed as per
their normal behavior.
Replaced some of the old tile-based decals

Cargo is also slightly shorter now, as requested.
Removes Snowmobiles, Fixes Ion Inhand
Merge pull request #73 from SamCroswell/master

Weapons No Longer Embed, Minor Map Edits