Mobile friendly toolbar

Mobile toolbar is supposed to work out of the box on the V2. Also see config docs (search for “Mobile” there). I’d suggest to remove that part of your space-style and see if it works for you. The configuration options are hamburger or bottom-bar. You can override the CSS for .sb-actions or add a new one.

```space-lua
config.set {
  mobileMenuStyle = 'bottom-bar' -- or 'hamburger'
}
```

@zef The values for the config option should be documented here as comment listing the existing choices.