* Core/Pools: Fix pools with 1 member never spawning anything anymore
Attempts to fix a 6 years old bug and never fixed by the original author.
* Remove respawn times from db once a respawn has been handled
* Allow to specify if Despawn1Object() should save or not the respawn time. We don't need to do that when respawning an object.
* Apply the same fix to GameObjects too
# Conflicts:
# src/server/game/Pools/PoolMgr.h