*Remove 'first_spell' and 'rank' columns from table spell_chain

*Separate req_spell and spell_chain data to save some memory
*Use spell_chain data generated from dbc instead of sql

--HG--
branch : trunk

src/game/Chat.h

@@ -248,7 +248,7 @@ class ChatHandler
         bool HandleReloadSkillExtraItemTemplateCommand(const char* args);
         bool HandleReloadSkillFishingBaseLevelCommand(const char* args);
         bool HandleReloadSpellAffectCommand(const char* args);
-        bool HandleReloadSpellChainCommand(const char* args);
+        bool HandleReloadSpellRequiredCommand(const char* args);
         bool HandleReloadSpellElixirCommand(const char* args);
         bool HandleReloadSpellLearnSpellCommand(const char* args);
         bool HandleReloadSpellProcEventCommand(const char* args);