Fixed compatibility with plugins that use signs

- dropped 1.14.4 support, please update your server.
- fixed various dupe problems

removed the middleclick feature as spigot api doesn't allow a good management of this event, so it's not precise and causes issues.

fixed shulker dupe

- plugin recoded
- optimizations
- added beds support
- added middleclick (creative) to get exact copy of the block on the ground (skulls...)

fixed lectern bug

Should add compatibility with plugins that listen to BlockDropItemEvent.
Example: autopickup plugins and similar

- fixed wall placed tiles not saving data
- fixed campfire dupe bug

Fixes bugs with inventory containers

Fixed 1.14 compatibility