Eluna update version
Core/Misc: Better unknown account log

By Warpten.
Update worldserver.conf.dist
Hide Battleground List window

The Battleground List window never showed on retail.

Blizzlike.
Merge pull request #13718 from Gooyeth/4.3.4

Hide Battleground List window
Merge branch '4.3.4' of https://github.com/TrinityCore/TrinityCore