Rename R to ResourceHelper and refactor method names
Import locale string methods statically
Make members final whereever possible
Update commands in plugin.yml
Remove all old message setting commands
Add message reset string
Add SetMessageExecutorTest
Add SetMessageExecutor
Register SetMessageExecutor for setjoin, setquit and setkick
Add locale strings for own message actions
Add player only command error locale string
Add PlayerCheck command check
Add SetMyMessageExecutorTest. Horray for long names.
Add SetMyMessageExecutor
Register command executors for setmyjoin and setmyquit
Don't test for player-specific kick messages
Specify wildcard imports in SetMessageExecutorTest
Add setplayerquit and setplayerjoin to plugin.yml command listing
Add SetPlayerMessageExecutorTest
Update locale strings for setplayer* commands