DB: multiple fixes;

* Updated some missing spelldifficulty_dbcs.
* Added missing graveyards in a few places.
* Corrected coords on some of our areatrigger_teleports, and added some missing.
DB: Added Gilneas waypoint data for quests(14212,14293,14465)

- wp's are for non-player controlled mounts paths.
- thanks to cataproject for this one, verified to sniffs
::thumbs::
Core/BattleGrounds: implemented battle of gilneas, and TwinPeaks