Describe the bug
Creating a lexicon with a special character (I tested ü & ä) creates a seemingly working lexicon but removes my abilty to interact with it as epadd chrashes when clicking on it. This prevents me from renaming it or adding/removing entries.

Steps to Reproduce
Steps to reproduce the behavior:

1. Go to Lexicon
2. Create a new lexicon with an ü or ä
3. Save the lexicon
4. Go back to the main page
5. Go to Lexicon
6. Click on the newly created lexicon

Screenshots
Broken encoding in lexicon list:

Desktop:

• OS: Ubuntu 20.4
• Browser: agnostic
• ePADD Version: 11.0.1-alpha
• Java Version: 17