Core: more cleanup at locale handling.

Also fixes some problems mainly with non English languages.

--HG--
branch : trunk

src/server/game/Server/WorldSession.cpp

@@ -52,7 +52,7 @@ _security(sec), _accountId(id), m_expansion(expansion), _logoutTime(0),
 m_inQueue(false), m_playerLoading(false), m_playerLogout(false),
 m_playerRecentlyLogout(false), m_playerSave(false),
 m_sessionDbcLocale(sWorld.GetAvailableDbcLocale(locale)),
-m_sessionDbLocaleIndex(sObjectMgr.GetIndexForLocale(locale)),
+m_sessionDbLocaleIndex(locale),
 m_latency(0), m_TutorialsChanged(false), recruiterId(recruiter)
 {
     if (sock)