Clean up exception types.
[Feature] Expand /ci to allow removing certain amounts, and breakdown on the items removed.
Update messages_nl.properties

Added new CI lines
bit indifferent about line 543 and 544
Update messages_nl.properties
Merge pull request #498 from mozoa/patch-1

Added /ci lines
[Feature] Allow the placing of spawners with predefined network id's (/i spawner:50)
[Permission] essentials.spawnerconvert.<mobname> - Allow the placing of specific mobspawners with premade network id's.