Bugfixing and improvements

Hi all! This patch contains some bug fixes and some small new features.

🐞 Fixes & Improvements

Background & Screensaver Settings: Selecting a background type and configuring screen saver behaviour now work as expected. Colour settings have also been corrected to prevent inconsistent behaviour.

Configuration Loading: Resolved an issue where the dashboard would occasionally load the config/YAML from another card.

✨ New Features

Layout Deletion: You can now delete saved layouts directly from the UI—just be sure to update the backend integration and restart Home Assistant for this feature to work properly.

Quick Edit Shortcut: Double‑clicking a card while in edit mode will immediately open its edit menu for faster customization.

Card‑Specific Settings Menu: Each card now has a mini settings menu (accessible in edit mode) where you can adjust overflow behaviour and choose which tab the card belongs to.

I'm sure that there are some things that are not fixed so please be patient and I wil lget to them when I have the time.