Onboarding - automatically slide through Welcome Screens - pick app language before welcome screens - bottom section of the welcome screens ask user to pick news languages, news categories, news sources

[ndubbaka]

1. ask user to pick app language before showing welcome screens.
2. In welcome screen, show app’s key features and benefits in the language chosen by user.
3. automatically slide through Welcome Screens.
4. bottom section of the welcome screens ask user to pick news languages, news categories, news sources.