There are some inconcistencies in the application when it comes to
button UI elements because we're using `StatusButton` in some places,
in other we use `StyledButton`. The latter is the original
component we've created when we started out building Status
Desktop, but is planned to be removed entirely in favour of
`StatusButton`.
This commit replaces the usages of `StyledButton` with `StatusButton`
- Show welcome page only when there are no ens names registered
- If you already have an ens username for the current account, connect and mark it as preferred name
- State machine navigation
Pascal Precht
Jonathan Rainville
Richard Ramos