The chat page is complex and slow to create, which creates a visible lag
when user switches room.
Instead of throwing the pre-switch one away and
making a new one from scratch, keep the same page and update its user &
room ID for a big improvement in responsiveness. The rest is automatic
thanks to QML property bindings.
- Move out all shortcuts from their central file to the component they
actually belong to
- Get rid of DebugConsoleLoader and the multiple consoles handling mess,
have only one global console
