Redesign: mentions panel

[bwindels]

• restyle
• add "All rooms" option

[bwindels]

we don't currently support showing notifications for all rooms

[MadLittleMods]

Is the mentions panel the "Notification panel" nowadays (accessed from the bell icon in the top-right)?

The notification panel shows mentions across all of your rooms now. Perhaps this can be closed now?

[SimonBrandner]

Perhaps this can be closed now?

Yeah, probably