DB/Gossip: Proenitus

Closes #13165
Core/Misc: multiple changes
* fixed build
* apply tc codestyle to ObjectGuid class
* fixed warning
DB/Misc: Some misc fixes for Northrend. Mostly fix flight speed of some npcs.
Fixed build
Core/Misc: Multiple static analysis issues fixed (small optimizations and clear code)
Oops.
Merge pull request #1 from TrinityCore/master

Update local repository