Option to hide contact picture

[Djungelfeber]

Checklist

• [x] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [x] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [x] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [x] I have taken the time to fill in all the required details. I understand that the request will be dismissed otherwise.
• [x] This issue contains only one feature request.
• [x] I have read and understood the contribution guidelines.

Feature description

Make it possible to hide Contact pictures/Signatur cicles and just show the contact name.

Why do you want this feature?

I don't use contact photos in my contact list and feel that they are unnecessary in the app for that reason. And it makes a more cleaner look without the pictures/circles.

Additional information

No response