This update migrates the land rent and sell signs and holograms to the new landblock system. It's recommended to backup your database, if
you use the rent system.

- Fixed: [#2435] Don't show player inbox on join, if player has inbox disabled
- Fixed: [#2433] Entering boats counts as interact_general
- Fixed: [#2429] Wither animal attack flag bound to entity griefing flag
- Fixed: [#2429] Spawner spawn flag setting
- Fixed: [#2425] rent signs disappearing in rare cases