v3.6.3.7

Added 5.3 items to the on-use lists (request by Proto, Zamphire and
Kavlantis).
Added a UseOnThree part (suggestion by Proto).
Added Cracked Primal Egg (request by Laria).
Added Kyparite Fragment, a few new ID's for older items and a all new
Heroic Cache (Heroic Scenario Reward).
Added the Gold container rewards for the Brawler Guild Fights.

And possibly some other stuff I didn't mention in the changelogs.