Allow setting specific sprites as expressions

- Update /expression-set command to allow setting specific sprites
- Enhance enum completion for /expression-set to show expressions/sprites and more their info
- Fix setting sprite folder reprinting stuff double
- Fix not being able to unset expressions

public/scripts/extensions/expressions/style.css

@@ -109,6 +109,9 @@ img.expression.default {
     flex-direction: column;
     align-items: center;
     justify-content: center;
+}
+
+.expression_list_image_container {
     overflow: hidden;
 }