Bug: Creating a new list may scramble description, display name, subject prefix

When creating a new list, umlauts and other non-English characters get replaced by question marks in the description field. The fields display name and subject prefix end up with uppercase-information removed. Additionally, it would be nice to be able to specify a custom format for subject prefix.

What it looks like right now

What I would have wished it to look like after having clicked "Create List"!