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 also be "recharged", not only the burnout ones.

The burnout timer is always reset, no matter if the torch is unlit or not.
Merge pull request #678 from CHeuberger/addRechargeLitTorche

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