DB/Misc: Darkspeaker R'khem now has chains.
Closes #7316
Scripting/Storm Peaks: Quest 13285 "Forging the Keystone" now scripted.
Closes #6921
Scripting/Storm Peaks: Tested all my sql but not the title :P
DB/Waypoints: Add missing waypoints for Stormforged Taskmaster and 3 missing spawns