Core/Cleanup:

* move repeating code into separate method for storing locale strings in ObjectMgr (copy/paste sucks, you know)
* fix 'signed/unsigned' warnings (at least in VS)
* fix some other warnings and cleanup relative code

--HG--
branch : trunk

src/server/game/Groups/Group.cpp

@@ -361,7 +361,7 @@ uint32 Group::RemoveMember(const uint64 &guid, const uint8 &method)
         sLFGMgr.OfferContinue(this);
 
     // remove member and change leader (if need) only if strong more 2 members _before_ member remove
-    if (GetMembersCount() > (isBGGroup() ? 1 : 2))           // in BG group case allow 1 members group
+    if (GetMembersCount() > (isBGGroup() ? 1u : 2u))           // in BG group case allow 1 members group
     {
         bool leaderChanged = _removeMember(guid);