added test suite for chatbox, use accept/reject buttons for ToS instead of typing answer

__mocks__/matrix-js-sdk.js

@@ -0,0 +1,11 @@
+export const mockCreateClient = jest.fn();
+export const mockStartClient = jest.fn();
+
+const mockMatrix = jest.fn().mockImplementation(() => {
+  return {
+    createClient: mockCreateClient,
+    startClient: mockStartClient
+  };
+});
+
+export default mockMatrix;