This is needed when accessing the context menu from the timeline status updates.
Previously, it'd only change the active channel because it assumed the user is already
in the chat view. This is no longer the case when in timeline view, so we need to make sure
we first navigate to the chat view.
This component introduces `StatusLetterIdenticon`, `StatusImageIdenticon`
and `StatusIdenticon`.
- `StatusLetterIdenticon` renders an identicon with a single letter based on a
name.
- `StatusImageIdenticon` renders an actual image based on an identicon URL
- `StatusIdenticon` is a composition of the former both, but with a loading mechanism
to decide which should be rendered
The commit also ensures all of these components are used respectively throughout
the application.
