* NEW: Allow multiple tools with the same name (but with different internal IDs)
* BUG: Right-clicking with a tool does not use the item anymore (like food items, etc.)
* BUG: A player tool configuration file with an empty tool list does not throws an NPE anymore.
* BUG: The tool's commands are now correctly saved with the / before the command.
* OPT: Use only one virtual player per player, not per tool.