Topic: Tank fixes

I've added missing tanks, and also tank name and tier modifications has been introduced to WotStat.

Re: Tank fixes

I've also fixed these old duplications: t-50-2 was replaced by mt25 and pziv by pz-iv ausf h.

Re: Tank fixes

Some issues has been fixed around inherited stats from kv-1s to kv-85 and from pziii to pziii ausfj.