First Run Page: Make page consistent with website installation flow [UX]

Background

See trac#5894 and trac#6749.

What to change

• Replace existing first-run page with new design (see spec)
• Reuse websites-defaults

Translation

CSV File

https://docs.google.com/spreadsheets/d/1xAB8mzHc_iu8DRh01kyhohl32pF4uD06aYzF0SK99Qs

Additional Information

Additional information if applicable

From here:

You can find new spreadsheet here, you can ignore the popup.json fields for now, I'll prepare separate sheet with the exported translations after Merge Request is reviewed.

Languages to translate into

Core languages.

Related tickets

Link to hub ticket, added by C&T team