String props on wizard

[rachael-phillips]

This is the original issue. On string props:
Title, descriptions, button labels, all these props should be React nodes to allow put there anything (ex.: localized text with using of react-intl, or titles with a tooltip). Only string props should be accessibility props (aria-label, etc.) where any html elements cannot be rendered .

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.