DB/BroadcastText: Created BroadcastText table -- contains every gossip, creature text & npc text. Note that it has NO use for you for now except if you want to pick some texts from it to add them to your scripts/Pull Requests. This file will be used as a globalized table which other ones will link to in the future.
DB/Creatures: Added all NPC mounts with sniff values
DB/Creatures: Corrected creature addon values for mounts
Core/Sai: Added new db errors :P (hihi)
Core/Misc: Fix some static analysis issues

Add some asserts and additional NULL checks as sanity checks.
Core/Misc: Fix typo in f47962f6707bb53a3241d23257a5bbd1b2679f87