Editor embeds (#680)

- [x] Make deleting an embed easier
- [x] Add document level ability to disable embeds
- [x] Add team level ability to disable embeds
- [x] GitHub
- [x] Numeracy
- [x] Mode Analytics
- [x] Figma
- [x] Airtable
- [x] Vimeo
- [x] RealtimeBoard
- [x] Loom
- [x] Lucidcharts
- [x] Framer
- [x] InVision
- [x] Typeform
- [x] Marvel
- [x] Spotify
- [x] Codepen
- [x] Trello

app/embeds/YouTube.test.js

@@ -0,0 +1,33 @@
+/* eslint-disable flowtype/require-valid-file-annotation */
+import embeds from '.';
+
+const { YouTube } = embeds;
+
+describe('YouTube', () => {
+  const match = YouTube.ENABLED[0];
+  test('to be enabled on video link', () => {
+    expect(
+      'https://www.youtube.com/watch?v=dQw4w9WgXcQ'.match(match)
+    ).toBeTruthy();
+  });
+
+  test('to be enabled on embed link', () => {
+    expect(
+      'https://www.youtube.com/embed?v=dQw4w9WgXcQ'.match(match)
+    ).toBeTruthy();
+  });
+
+  test('to be enabled on shortlink', () => {
+    expect('https://youtu.be/dQw4w9WgXcQ'.match(match)).toBeTruthy();
+  });
+
+  test('to not be enabled elsewhere', () => {
+    expect('https://youtu.be'.match(match)).toBe(null);
+    expect('https://youtube.com'.match(match)).toBe(null);
+    expect('https://www.youtube.com'.match(match)).toBe(null);
+    expect('https://www.youtube.com/logout'.match(match)).toBe(null);
+    expect('https://www.youtube.com/feed/subscriptions'.match(match)).toBe(
+      null
+    );
+  });
+});