[svn] * Added npc follow, waterwalk, repairitems commands. Patch by dythzer

* Prevent adding more than 5 people to raid - Apoc
* fixed typo from one of our previous commits.
* Fixed two strings in core, thanx to warhead for patch.

--HG--
branch : trunk

src/game/GroupHandler.cpp

@@ -551,6 +551,9 @@ void WorldSession::HandleGroupChangeSubGroupOpcode( WorldPacket & recv_data )
     /** error handling **/
     if(!group->IsLeader(GetPlayer()->GetGUID()) && !group->IsAssistant(GetPlayer()->GetGUID()))
         return;
+        
+    if (!group->HasFreeSlotSubGroup(groupNr))
+        return;
     /********************/
 
     // everything's fine, do it