It may happen we receive the disconnect iq after the main room is already destroyed. We now send disconnect on destroy to all vnodes or when receiving disconnect iq per vnode.
* feat(visitors): Handles locked rooms for visitors.
* squash: Handle locked room password on promotion.
* squash: quotes.
* squash: Renames main_domain to local_domain.
* squash: Renames fmuc_main_domain to main_domain.
Adds required config to point to the main virtual host of the main prosody. There are cases when the first visitor tries to join and there are not main participants as they are in the queue waiting for the vnode connect message and we cannot get dynamically the main domain.
* squash: Fix check for main_domain config.
* fix(visitors): Updates docs and instructions.
* fix(visitors): Show counter only for main participants.
* fix(visitors): Skip showing the label even for 0 visitors.
It was showing 0 when visitor count down back to 0.
* feat(visitors): Small optimization for jid.split calls.
* fix: Fix skipping properties changed received before conference joined.
* fix(visitors): Propagates newly joined participants to visitor nodes.
* feat(visitors): When iAmVisitor is set, subtract visitor from participants count.
* feat(visitors): Visitors request to participate impl.
Adds option for auto promotion setting which is the only one available at the moment.
* squash: Fix comments.
* squash: Fix default case when vnode is missing.
