#1116 #1117 Add command usage hints and remove unused message keys

- Add usage message on argument mismatch where available
- Remove unused message keys
- Create tool task to search for a message key's usages and to find unused keys

src/main/resources/messages/messages_gl.yml

@@ -31,7 +31,6 @@ not_logged_in: '&cNon te identificaches!'
 max_reg: '&fExcediches o máximo de rexistros para a túa Conta'
 no_perm: '&cNon tes o permiso'
 error: '&fOcurriu un erro; contacta cun administrador'
-unsafe_spawn: '&fA localización dende a que saíches era insegura, teletransportándote ao spawn do mundo'
 kick_forvip: '&cUn xogador VIP uniuse ao servidor cheo!'
 
 # AntiBot
@@ -82,7 +81,6 @@ email_added: '[AuthMe] Correo engadido!'
 email_confirm: '[AuthMe] Confirma o teu correo!'
 email_changed: '[AuthMe] Cambiouse o correo!'
 email_send: '[AuthMe] Enviouse o correo de confirmación!'
-# TODO email_exists: '&cA recovery email was already sent! You can discard it and send a new one using the command below:'
 # TODO email_show: '&2Your current email address is: &f%email'
 # TODO incomplete_email_settings: 'Error: not all required settings are set for sending emails. Please contact an admin.'
 # TODO email_already_used: '&4The email address is already being used'