More dispense blocking on roads

[traksag]

Overview

Currently PlotSquared prevents water buckets and lava buckets from being used by dispensers on the road (fired from e.g. inside a plot). This pull request aims to prevent any modification by dispensers to the road.

Fixes https://issues.intellectualsites.com/issue/PS-69 (and more)

Description

Blocks the following items from being used by dispensers on roads:

• Shulker boxes: placed by dispensers.
• Carved pumpkins: placed on iron blocks and snow blocks if they are in the shape of an iron golem or snow golem.
• Wither skeleton skulls: placed on soul sand if in the shape of a wither.
• Flint and steel: places fire. PlotSquared currently prevents fire from being created already, but the flint and steel has its usage decreased.
• Bone meal: creates plants. Although PlotSquared already prevents plants from growing on the road.
• Shears: harvests honey combs from bee nests and beehives.
• Glass bottle: harvests honey from bee nests and beehives.
• Glowstone: charges respawn anchor.
• Fish buckets: create water source block.
• Buckets: pick up water.

See also https://minecraft.gamepedia.com/Dispenser.

Checklist

• I included all information required in the sections above
• I tested my changes and approved their functionality
• I ensured my changes do not break other parts of the code
• I read and followed the contribution guidelines