Zudo

New (Bungee) player count placeholders

2

I have three new placeholders to add: - `%online@!server%` - Players not connected specified server. - `%online@server1,server2,etc%` - Players on any of specified servers. - `%online@!server1,server2,etc%` - Players not on...

1. Hidden achievements (shown only after they are achieved) 2. Removing achievements after they have already been achieved 3. "Quiet" achievements that don't show the notification

- Unable to move install dir if there is already a game data folder there

Relevant: [DDMM-5](https://sentry.io/share/issue/edcddd5cd35d44e2adef54561e32a750/)