Tests

Use more destructuring;
Use more message.util;
Allow to use no database;
Add more logging, so it's clear what log came from where;
Use config.json instead of auth.json for token and owners;
Fix lock command;
Remove unneeded eslint-disable...
Add inhibitores/.gitkeep to avoid an error since there are no current inhibitors.

Package.json scripts

Add the test folder to the lint script;
Make the test script actually run the test bot;
Add a test:nodb script to run the test bot with no db;