Core/Startup: Change an error about "broken zone-data" on guild loading to debug

This "error" happens when player is on zone 0 or transport.
Core/Network: Fixed packets being properly received only by the first player when broadcasted to everyone

Closes #12675
DB/SAI: Alpha Worg

Original Script by @Malcrom, updated by me

Garwal should be invisible to players without aura from http://www.wowhead.com/spell=43060 this is also the spell which forces reputation on garwal to be hostile but the server side spell which Garwal is meant to cast 43062 Alpha Worg: Garwal's Invisibility which is in spell dbc now but does not work so players can still see him without quest but hes friendly.

Closes #8412
DB/Misc: Add some pathing, equipment, and missing Combat AI for several npc's in Nagrand
Rename 2014_07_28_07_world_misc.sql to 2014_07_28_08_world_misc.sql
DB/Waypoints: Fix pathing for creatures in cave between Zangermarsh and Blades Edge
DB/Waypoints: Replace estimated path for Stronglimb Deeproot with proper data
DB/Misc: Fixup Twilight Ridge area of Nagrand. Add missing spawns and waypoints, fix visuals, and fix SAI.
Update 2014_07_28_07_world_sai.sql

slight change to reflect recent changes in db structure
Core/Instances: Explicitly unload InstanceSaveMgr before MapManager, fixes invalid memory access at shutdown

Closes #12635
DB/Misc: Expedition Armory Fixup - Add missing spawns, pathing, and update some SAI
CI/Travis: Add steps to create databases and import SQLs

This way the automated build with error if sqls contain errors.
Do NOT import world_database.sql, keep using TDB releases.
Update razorfen_downs.cpp
DB/SAI: Henry Stern

Replace a non functioning core script with SAI
Merge pull request #12683 from dr-j/master

DB/SAI: Henry Stern
Core/Socket: Fixed expected template evaluated type for AsyncWrite if PacketType is a pointer (Bla* const& is not what we want)
Update Socket.h

Added missing typename keyword
Core/Config: User-friendlyfy configuration parsing errors

It will now print useful error messages that pinpoint the issue
with the config file (missing file, bad syntax, etc)

In memory of MitchesD that lost 18 hours finding a problem with
his config because of a duplicated line.
DB/Creature: Spawn missing spawns (3.3.5)

Spawn Miles Sidney and Wright Williams who are missing from 3.3.5 world db
DB/SAI: Add some missing texts

* adds texts for Bimble Longberry
* Rescripts Miles Sidney and Wright Williams so texts are said in order of dialect rather than just random texts, also adds the missing texts.