Core/Oculus: Fixes here and there, implement phasing

* Implement phasing (sniffed)
    * Add drakes proper support (events, texts, conditions for spells), remove npc_spellclick_spells
    * Add proper support for Gossip npcs
    * Removed the arcane shield Urom use first time we are about to meet him, because he only get it after he spawns a wave, added Evocation casts from sniff/retail that also break the teleportation visual bug
    * Some db updates based on Aokromes sniffs
    I intended to do it all, but there are core issues I have no knowledge to fix and I don't want to jump to other things before fixing them. :) So, I will submit boss updates, if I ever fix them. There are still stuff do do for drakes spells left from before.
    * Majour thanks to Shauren for helping me with summoning spells and w/e I ask him and all who answered my questions.

src/server/game/Spells/SpellMgr.cpp

@@ -3599,6 +3599,13 @@ void SpellMgr::LoadDbcDataCorrections()
                 spellInfo->manaCost = 0;
                 spellInfo->manaPerSecond = 0;
                 break;
+            // OCULUS SPELLS
+            // The spells below are here, because their effect 1 is giving warning, because the triggered spell is not found in dbc and is missing from encounter sniff.
+            case 49462: // Call Ruby Drake
+            case 49461: // Call Amber Drake
+            case 49345: // Call Emerald Drake
+                spellInfo->Effect[1] = 0;
+                break;
             default:
                 break;
         }