[9008] modelids for shapeshifts from dbc

this will correct some modelids:
form         old model, new model
FORM_TRAVEL: 632   --> 918      (now a bit smaller)
FORM_GHOUL:  10045 --> 25527    (whisp --> ghoul)
FORM_CREATUREBEAR: 902 --> 2281 (old brown horse -> bear)

implement shapeshift for spell 24347

this commit also
fix the errormessages with: "Race %u not found in DBC: wrong DBC files"
which were triggered from this code
and will fix the modelid for creature 2038
since it's also using a shapeshift aura and only got the horde-modelid

+ some new entries in ShapeshiftForm-enum
+ some research for the shapeshift.dbc

src/game/SpellHandler.cpp

@@ -311,6 +311,7 @@ void WorldSession::HandleCastSpellOpcode(WorldPacket& recvPacket)
         // not have spell in spellbook or spell passive and not casted by client
         if (!((Player*)mover)->HasActiveSpell (spellId) || IsPassiveSpell(spellId) )
         {
+            sLog.outError("World: Player %u casts spell %u which he shouldn't have", mover->GetGUIDLow(), spellId);
             //cheater? kick? ban?
             recvPacket.rpos(recvPacket.wpos());                 // prevent spam at ignore packet
             return;