* fix(connection-status): remove unused participant connectionStatus.
Always use trackStreamingStatus now that legacy endpoint based signaling has been removed.
* remove the check for source-name signaling.
Default to source-name signaling always.
* Remove the check for multi-stream mode.
Make that the default mode and remove the support for legacy SS mode.
* Remove presenter mode.
* update latest@lib-jitsi-meet
- add possibility to allow execution of the button's routine besides triggering
`toolbarButtonClicked` API event
- keep backwards compatibility
- get rid of `ToolbarButton`
* feat(toolbox) allow any toolbox button to be displayed as main
fixes the previous behaviour where only a certain set of buttons were whitelisted for being displayed in the main toolbar
* code review
* code review - fix avatar icon position