AG-1053 Tidy react examples, make more idiomatic

src-examples/dynamicComponentExample/CurrencyRenderer.jsx

@@ -0,0 +1,31 @@
+import React, {Component} from "react";
+
+export default class CurrencyRenderer extends Component {
+    constructor(props) {
+        super(props);
+
+        this.state = {
+            value: props.value
+        }
+    }
+
+    static formatValueToCurrency(currency, value) {
+        return `${currency}${value}`
+    }
+
+    // noinspection JSUnusedGlobalSymbols
+    refresh(params) {
+        if(params.value !== this.state.value) {
+            this.setState({
+                value: params.value.toFixed(2)
+            })
+        }
+        return true;
+    }
+
+    render() {
+        return (
+            <span>{CurrencyRenderer.formatValueToCurrency('EUR', this.state.value)}</span>
+        );
+    }
+};