Fix clear, start of NormalWorld /w roads

- Updated Metrics
- Fixed not being able to use commands that cost $0 when you have $0
- Fixed removing players from Allowed list when selling plot
- Plot Clearing now only checks entities in the chunk being currently
cleared instead of the whole server
- Plot Clearing now removes LWC protections from an Asynchronous task
- Properly setting to null every static variables when plugin is
disabled (fix memory leaks)
- Change default value for PLotAutoLimit to 1000 instead of 100