Please display required arch even for supported archs

• Device OS and version: Android 6.0.1
• Device model/manufacturer:
• F-Droid version (in the About screen): !.4alpha1
• F-Droid privileged extension version (if installed): none

What did you do? (clear steps if possible)

Viewing available versions of an app that builds separate APKs for each arch, for example Document Viewer

What did you expect to see?

The arch. for which the APK is built

What did you see instead?

The arch is only displayed for unsupported archs., in red color.

What I request is displaying the arch. even for supported archs. so the user would select the arch he wishes. This is specifically for ARM as there are 2 ARM archs.