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.
As per discussion, there's no "primary" and "secondary" type in round buttons.
They just appear in different sizes (44x44, 40x40, 32x32). The size determines
their look & feel