Make coordinates stored for drop/pickup/move activities relative to the player, fixes #8901
Automated gas stations can now refund unused gasoline

This adds a new menu option, "Refund cash.", to the automated gas station which allows you to pump a vehicle full, and then refund the leftover back to a cash card.
Added ability to mark locations on the overmap as 'explored'. This turns the symbols to the dark gray color as long as overlays are enabled.
Apply monster blacklists and whitelists to all spawns.

Now, for example, if you use a mod with

{
    "type": "MONSTER_WHITELIST",
    "categories": ["WILDLIFE"]
}

you'll never see any creatures other than wildlife.
Make the coordinate adjustment to a sanity check I'd missed.
Convert the coordinates in place int he local parameter instead of making a new local.
Merge branch 'MarkExploredOnOvermap' of github.com:KrazyTheFox/Cataclysm-DDA
Merge branch 'strict-monster-blacklisting' of github.com:Kodiologist/Cataclysm-DDA
Merge branch 'make-drop-pickup-move-coordinates-relative' of github.com:kevingranade/Cataclysm-DDA
Merge branch 'autogas-refund' of github.com:tivec/Cataclysm-DDA