Revamp iOS & macOS web pages

[kelson42]

Talking about:

• https://www.kiwix.org/en/downloads/ios/
• https://www.kiwix.org/en/downloads/macos/

MacOS pages provides links to old version

iOS page says minimal version is iOS11 but it is now iOS14. Maybe we should better say nothing about that there. Information is anyway given automatically on app store.

Considering that this is the same app now, we coyld consider to merge both pages in one.

[Popolechien]

Done.

[kelson42]

Can you please:

• Rename the page in apple in place ios
• Secure we don't create broken links by redirecting https://www.kiwix.org/en/downloads/macos/ and https://www.kiwix.org/en/downloads/ios/ to https://www.kiwix.org/en/downloads/apple/
• Change links pointing to https://www.kiwix.org/en/downloads/ios to https://www.kiwix.org/en/downloads/apple/
• Ensure translated versions work fine, https://www.kiwix.org/fr/download/ is wrong for example

[Popolechien]

I have sent jobs to all translators (Arabic has issues with WPML, not sure anything works there atm). French and German are already up-to-date.

[kelson42]

Sorry, but only part of the job has been done, old pages are transformed in redirects and we should keep the dmg button.