[Enhancement] Group widget messages by date (#363)

* [Enhancement] Group widget messages by date

* Update DateSeparator snapshot

app/javascript/shared/components/specs/DateSeparator.spec.js

@@ -0,0 +1,14 @@
+import { mount } from '@vue/test-utils';
+import DateSeparator from '../DateSeparator';
+
+describe('Spinner', () => {
+  test('matches snapshot', () => {
+    const wrapper = mount(DateSeparator, {
+      propsData: {
+        date: 'Nov 18, 2019',
+      },
+    });
+    expect(wrapper.isVueInstance()).toBeTruthy();
+    expect(wrapper.element).toMatchSnapshot();
+  });
+});

app/javascript/shared/components/specs/__snapshots__/DateSeparator.spec.js.snap

@@ -0,0 +1,11 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Spinner matches snapshot 1`] = `
+<div
+  class="date--separator"
+>
+  
+  Nov 18, 2019
+
+</div>
+`;