DB/Conditions: Fix some spell implicit targets

Fix an SAI issue (visual only)
Core/Grids: Fix possible crash
Update Whisper pr, missed some logic there
DB/Quests: Fix Valkyrion Must Burn, closes #2595

Replace core script with SAI
DB/Creature: Fix a creature state (visual only)
Merge pull request #9447 from thomas007788/WhisperV2

Update Whisper pr, missed some logic there
DB/Quests: Fix Send Them Packing, closes #6851
Scripts/Commands: Add .list mail $char/$guid command

Prints a list of mails received by the characters

Closs #9421
Core/DB: Fix a table name in CHAR_SEL_MAIL_LIST_INFO
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/server/scripts/World/npcs_special.cpp