Removes Reloads trait.
This enables adding multiple AmmoPools via @ differentiators and
Name which adds the possibility to assign each armament to a specific
ammo pool.
Furthermore, this moves all Reloads functionality onto AmmoPool.
Now a combination of all three is possible on a single actor: no limited
ammo, limited ammo that can reload on its own, and limited ammo which
needs to be reloaded at a rearm actor.
Additionally moves RearmSound from Minelayer to AmmoPool.
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