Command error messages are hardcoded

The bug

The command parser returns "Nothing changed, ..." when commands like /op or /scoreboard execute successfully but do nothing because the value they were supposed to change is already correct. (for instance, when an operator tries to /deop a non-operator, this would happen.)

Those "Nothing changed, ..." messages are hardcoded (they aren't on the lang-file / available for translation on Crowdin)

How to reproduce

1. Set your language to anything other than English
2. /team add test
3. /team option test friendlyfire true

Affected commands

• /op
• /deop
• /team