xF2 Eklenti [MMO] Centrifugo 2.3.4

Add new option Channel Instance ID

Now the connection token is generated on all pages, if you want to override you can set your parameters in the constructor for the token, host and path. Added a check for subscribing to an existing channel.

Updated js completely to work with centrifuge. Now this core as originally planned, no elements are processed. Only connections, event handling and channel subscriptions
js with a centrifuge and a connection to it now goes on all pages, this is done specifically to allow other add-ons to interact with it and use elements on other pages