There will probably be some breaking changes, so renaming v11.1.0 to v12.0.0. Also fixing a typo in a filename.
* refactoring + optimization * migration
* video/channel owner is MUC owner * the bot is MUC owner * the bot is admin on the MUC component * Peertube moderators/admins have no more special access (by default) * migration script to update all existing rooms
