Implement fWereWolfHealth GMST
On "UESPWiki":http://en.uesp.net/wiki/Bloodmoon:Werewolf is written that the maximum health of werewolves should be "twice normal amount", but in OpenMW version 0.42 it is not so.
There are questions:
The commands becomeWerewolf and undoWerewolf don't use some game setting?
I wonder how the current health level will be recalculated when the form is changed?
(RM-4142 from redmine: created on 2017-10-05 by Vladimir Ulisko, , closed on 2018-04-02 by Alexei Dobrohotov)