when creating a chest, if you edit respawn time, you had to wait 10 minutes for first respawn before it start spawning at defined time. Fixed it by respawning chest after time edit.
When respawning a chest, the last respawn time wasn't saved correctly. That's done.
Removed com.google.gson library that was imported f for 1.7 compatibility. Now using static refereces. 6 lines of codes added, 100 files removed^^