DB/Loot: Fix drops of Fragment of Val'anyr

By dr-j, closes #11959.
DB/Seasonal:
* Added missing seasonal quest in game_event_seasonal_questrelation table
* Remove all event = 0 in character_queststatus_seasonal table
DB/Misc: Fix some incorrect triggers

By dr-j, closes #11963
DB/Creature: Fix even more creature templates
DB/Creature: Fix even more creature templates
DB/Creature: Fix even more creature templates
DB/Creature: Fix even more creature templates
DB/Creature: Fix even more creature templates
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4