** Updated Old Glast Heim instance
* Changed hardcoded sprite ID for NPCs in Old Glast Heim to constant
* Cleaned up Old Glast Heim NPC dialogues
* Merged OGH merchants from idathena (credits @exneval)
* Updated Old Glast Heim mobs
* Updated stats and skills for all Old Glast Heim mobs.
* Added Modified Boots (Temporal Boots for Oboro/Kagerou, Rebellion) entries.
* Added Gigant Snake Skin + Modified Boots item combo
Thanks to @secretdataz @aleos89 @srhmike @ecdarreola Heris, @zackdreaver @exneval and the reviewers
Special thanks to Divine-Pride.net!