Core/Units: Updated byte order in UNIT_FIELD_BYTES_0 - fixes weird models

Closes #13648
Core/DBC: Move sPhasesByGroupStore and access method to DB2Stores

DB2Stores were not loaded yet at the old position.
Core/Packets: Added SMSG_MOVE_TELEPORT, SMSG_MOVE_UPDATE_TELEPORT, CMSG_MOVE_TELEPORT_ACK packets
Core: Fixed an old merge mistake
Core/Misc: Fixed some of the Coverity defects
Core/Game: Fix several warnings about wrong data types
Core/Game: Add missing default cases in switches
DB/GameTele: Add some Pandaria teleport positions.
Merge pull request #13646 from Naios/pandaria_teleport

DB/GameTele: Added some Pandaria teleport positions.
Core/DataStores: Fix startup (meh, @intelz)
Core/DataStores: meh, wrong build -.-
Scripts/MountHyjal: Update Archimonde's script

@todo: instance scripts needs a major clean up
Closes #6471

(cherry picked from commit 09b71ef8bd560166f07273bbf68b62e7d2633b67)
Core/Items: Fixed Inventory Loading from DB
Scripts/Misc: Initialize a couple of fields

(cherry picked from commit 548cc1cd2f31ca5fa767f148a086c76f8e9ef903)
Core/Player: Prevent updating visibility if player is not in world. Closes #13659
Core/Packets: Add connection indexes for server packets