DB/Creature: Summoning the Princess

By dr-j, closes #12370
Core: Fix warning
DB/Gameobject: Deeprun Chest

Closes #12430
DB/Quest: Let Them Not Rise

By dr-j, closes #12484
DB/Quest: Investigate the Alchemist Shop

Original work by Rushor, finished by dr-j, closes #9717
Core/InstanceScript: Fix possible crash

Store Boss doors/minions as GUID instead of GameObject*/Creature* to avoid accessing pointers to free'd memory.
DB/Misc: Update to badac94

By dr-j
DB/Quest: Hive'Zora Scout Report

By dr-j, closes #781
Core: Fix warnings vs2014 ctp (no support)
Scripts/Commands: Fix warnings vs2014 ctp (no support)
Core/Creature: Fix problems with neutral innkeepers
Core/Battlefield: move complex methods from BattlefieldWG.h to BattlefieldWG.cpp
Core/Battleground: moved some arena related code into a generic arena class
* fixed typo in random bg selection, that causes no bg is created if only one bg is enabled
* fixed swapped worldstates in Ring of Valor
DB/Creature: Script a lot of creatures

By dr-j, closes #12498
Core/Battleground: fixed typo
* and fixed some warnings
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4

Conflicts:
	src/server/game/Achievements/AchievementMgr.cpp
	src/server/game/Battlegrounds/ArenaScore.h
	src/server/game/Battlegrounds/Battleground.cpp
	src/server/game/Battlegrounds/Battleground.h
	src/server/game/Entities/Object/Object.cpp
	src/server/game/Entities/Pet/Pet.cpp
	src/server/scripts/Commands/cs_wp.cpp
Core/Battleground: Fix merge fail (thx @joschiwald)
Core/Battleground: Fix typo and small cleanup (again thx @joschiwald)
Merge branch '4.3.4' of https://github.com/TrinityCore/TrinityCore into 4.3.4