changed the color of the chat links and unit test

front/tests/Phaser/Game/HtmlUtilsTest.ts

@@ -0,0 +1,14 @@
+import "jasmine";
+import {HtmlUtils} from "../../../src/WebRtc/HtmlUtils";
+
+describe("urlify()", () => {
+    it("should transform an url into a link", () => {
+        const text = HtmlUtils.urlify('https://google.com');
+        expect(text).toEqual('<a href="https://google.com" target="_blank" style=":visited {color: white}">https://google.com</a>');
+    });
+
+    it("should not transform a normal text into a link", () => {
+        const text = HtmlUtils.urlify('hello');
+        expect(text).toEqual('hello');
+    });
+});