NEW ARTICLE: Differences between K-9 Mail and Thunderbird for Android

[kewisch]

One or more pages explaining the differences between K-9 Mail and Thunderbird for Android. All recommendations should point towards Thunderbird for Android.

Some differences

from tb-android-planning:
Push settings are now under “Manage folders” not from Settings, Account settings, Folders.
See https://forum.k9mail.app/t/push-setting-not-visble-in-tb-for-android/10502/2

[kewisch]

Kelly mentions this might rather be part of the home page. Let's decide if we need this at all.

[rtanglao]

Kelly mentions this might rather be part of the home page. Let's decide if we need this at all.

or we can add this to the FAQ see #2