Changes

Summary

1. disallow deleting mails of other users (commit: 221c8d0) (details)

Commit 221c8d0d1956ba5575abab11dc88dfae683e4d7b by Flo.e3 disallow deleting mails of other users (commit: 221c8d0)
	src/main/java/codecrafter47/bungeemail/FlatFileBackend.java (diff)
	src/main/java/codecrafter47/bungeemail/IStorageBackend.java (diff)
	src/main/java/codecrafter47/bungeemail/MailCommand.java (diff)
	src/main/java/codecrafter47/bungeemail/MySQLBackend.java (diff)