DB/Hotfixes: Added BroadcastText

* ToDo: delete the one in `world`
Core/NetworkIO: *Fixed basic auth packets
Fixed basic character packets
Nulled all opcodes
Thanks to @Shauren for pointing some derps out

Signed-off-by: Sovak <sovak007@gmail.com>
DB/Hotfixes: Fixed a problem from the parser
DB: Create hotfixes_database.sql file and update .travis.yml to import hotfixes

Note: hotfixes_database.sql will be empty until the next TDB release

And here's a friendly reminder that trinity now uses 4 DBs: characters, auth, world and hotfixes
DB: Move hotfixes_database.sql to the /dev folder (just like world)
Battle.net: Fixed JoinRequestV2 and JoinResponseV2 structures
Core/PacketIO: Updated packet headers to 6.0
Merge pull request #13361 from Sovak/602

Core/NetworkIO: *Fixed basic auth packets
SQL: Removex 6x from file names
DB/Hotfixes: Added GameObjects
Merge pull request #3 from TrinityCore/6.x

merge