Core/SAI: Make SMART_TARGET_OWNER_OR_SUMMONER also work for creatures summoned by spells
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Core/SAI: Added SMART_ACTION_SUMMON_CREA / SMART_ACTION_SUMMON_GO log for has already summon spell
Core/Guild: Fix Guild validation crash on start up

Partially revert 58ec4e531914121144b6f852e3abf27cbb2f6fc4 and increment GuildStore iterator before validating Guilds. This is required because Guild::Validate() removes the Guild from GuildStore if invalid.
Closes #8363
Core/Guild: Fix memory leak on Guild disband

Fix memory leak when disbanding a Guild, removed from GuildMgr but never deleted. Due to the different ways of how Guild::Disband() and Guild::DeleteMember() are called, each call to these methods has a different way to delete the Guild if empty/invalid.

Valgrind log:
 2,127 (240 direct, 1,887 indirect) bytes in 1 blocks are definitely lost in loss record 54 of 81
  at operator new(unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
  by guild_commandscript::HandleGuildCreateCommand(ChatHandler*, char const*) (cs_guild.cpp:91)
  by ChatHandler::ExecuteCommandInTable(ChatCommand*, char const*, std::string const&) (Chat.cpp:339)
  by ChatHandler::ExecuteCommandInTable(ChatCommand*, char const*, std::string const&) (Chat.cpp:320)
  by ChatHandler::ParseCommands(char const*) (Chat.cpp:466)
  by WorldSession::HandleMessagechatOpcode(WorldPacket&) (ChatHandler.cpp:217)
  by WorldSession::Update(unsigned int, PacketFilter&) (WorldSession.cpp:317)
  by World::UpdateSessions(unsigned int) (World.cpp:2632)
  by World::Update(unsigned int) (World.cpp:1989)
  by WorldRunnable::run() (WorldRunnable.cpp:60)
  by ACE_Based::Thread::ThreadTask(void*) (Threading.cpp:186)
  by ACE_OS_Thread_Adapter::invoke() (in /usr/lib/libACE-6.0.3.so)
Merge pull request #10722 from jackpoz/guild_startup_crashfix

Core/Guild: Fix Guild validation crash on start up
DB/Misc: Fix few startup errors
Core/Achievements: Converted save queries to prepared statements
Core/Vehicles: Add vehicle_seat_flag_unk18 (0x20000) to seat.IsUsableByOverride

Exact definition still needs to be researched
Scripts/Commands: Check if creature entry is valid before attempting to spawn (fixes unneccessary error in logs)
Update DBCStructure.h
Core/Commands: Fix .debug send opcode freeze if file dont exists.
Merge pull request #10729 from xjose93/DebugSendOpcodeFreeze

Core/Commands: Fix .debug send opcode freeze if file dont exists.
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore
Core/Spells: add an other condition to SpellInfo::NeedsToBeTriggeredByCaster to correct spells with are wrongly triggered by target instead of caster
- convert archavons rock shards to spellscript (now it works properly)
- add a spellscript for one spell that can't be corrected by this (and delete the sai hack, now i uses the correct spell)
Scripts/YoggSaron: fixed rewarding loot
Fixed build
-.-
Core/SAI: Fix typo (i blame germans laziness)
Core/Battleground: Fix scoreboard

Fix scoreboard broken in 07d793b94b60941ea08fd6170d8165994452c49c . A local variable in a loop stored data of the iterator before incrementing it.