Rain (really) put torches off, allow lit torches to be "recharged"

- Torches are now put off by rain when under open sky and burnout is enabled.
I hope that is how it really was intended, not as it was before, that is,
torches were only affected by rain if the burnout was disabled BurnTime zero).

- Lit torches can be "recharged", not only the burnout ones. …
The burnout timer is always reset, no matter if the torch is burned out or not.