made the RIGID flag work for containers

Container without that flag add the volume of their content to the total volume of the item.
Container with that flag show just the containers volume and ignore the content.
fix waterskin2, should have different volume, not bash modi
debug timestamp compilation and type-safety fix
fixed default locale issue on some systems
Gas zombies!
Description and name change

Bloater kinda reminds me of the last of us, but is surely better than
reeker
lets you leave an npc
Add explode_in_fire behaviour to items.

Can be applied to every item type.
What Bug?

There is no bug. You saw nothing. No lazy copy/paste that I forgot to
fix properly. You saw nothing.
Merge misc bugfixes.
Tweak ranged attack skilling caps and add rationales.
Bump max effective ranged skills to 10.
Implemented action menu that makes available all actions.

No more painfully going through the options to find out what you can even do! Just open the action menu(needs to be bound first through the options, heh) and browse at your leisure.
Egregious acts of reindention.
Add dispersion value of loaded ammo to gun info.
Fixes skewer price too.

Ten dollars? Really?
Made the action menu display relevant context-sensitive actions at the top.
Added a cancel entry to action menus.
Added ACTION_EXAMINE to the context-sensitive checks.
Highlight things you can interact with in game::choose_adjacent.

This was surprisingly simple to implement.
Added control vehicle to the context sensitive check.