Core/Quests: Quest flag fixups

* Update flag names
* Implemented QUEST_FLAGS_COMPLETION_NO_DEATH and QUEST_FLAGS_FAIL_ON_LOGOUT
* Started using QUEST_FLAGS_COMPLETION_EVENT and QUEST_FLAGS_COMPLETION_AREA_TRIGGER instead of a custom SpeclalFlag
* Renamed Quest::IsAutoComplete to Quest::IsTurnIn to better describe what it means (a quest that can be turned in without accepting it to quest log)
* Implemented QUEST_FLAGS_UPDATE_PHASESHIFT and removed forced phaseshift updates on every quest status change
* Implemented QUEST_FLAGS_LAUNCH_GOSSIP_ACCEPT - reopens gossip menu with questgiver
Port From (https://github.com/TrinityCore/TrinityCore/commit/4d4c7e68935df9ca40bd5539d602ac4e779f53d5)

Source/Game/Entities/Player/Player.cs

@@ -650,6 +650,8 @@ namespace Game.Entities
 
                 InitializeSelfResurrectionSpells();
 
+                FailQuestsWithFlag(QuestFlags.CompletionNoDeath);
+
                 UpdateCriteria(CriteriaType.DieOnMap, 1);
                 UpdateCriteria(CriteriaType.DieAnywhere, 1);
                 UpdateCriteria(CriteriaType.DieInInstance, 1);