* initializing some code parts
* mechanism to add font-awesome icons to the defaults one that
ConverseJS uses
* new way to override ConverseJS index.js (to add new custom plugins,
that are directly build into ConverseJS)
* For anonymous users: new "log in using an external account" dialog, with the "remote Peertube account" options
* ConverseJS: using global vars for custom localized string (injected
using Webpack)
