Properly Show and hide the sidebar on mobile layout when using Alt+g
Support narrowing buffer selection with Alt+0-9 after using Alt+g
support clearing hotlist from signals
support direct html colour specs in client messages
Add support for explicit fromnick in protocol messages where availiable

This can replace the prefix-nick-guessing where available.
Support host-rendered time

If available, display the time as rendered by the host instead of own
calculation
Show numeric overlays for Alt+0-9 keys on the buffers