Link icon fixing, name refactoring

js/entity/SymbolEntity.js

@@ -0,0 +1,13 @@
+import IEntity from "./IEntity"
+
+export default class SymbolEntity extends IEntity {
+
+    static attributes = {
+        value: String
+    }
+
+    constructor(values) {
+        super(values)
+        /** @type {String} */ this.value
+    }
+}