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/index.js

@@ -0,0 +1,38 @@
+// @flow
+import Airtable from './Airtable';
+import Codepen from './Codepen';
+import Figma from './Figma';
+import Framer from './Framer';
+import Gist from './Gist';
+import InVision from './InVision';
+import Loom from './Loom';
+import Lucidchart from './Lucidchart';
+import Marvel from './Marvel';
+import ModeAnalytics from './ModeAnalytics';
+import Numeracy from './Numeracy';
+import RealtimeBoard from './RealtimeBoard';
+import Spotify from './Spotify';
+import Trello from './Trello';
+import Typeform from './Typeform';
+import Vimeo from './Vimeo';
+import YouTube from './YouTube';
+
+export default {
+  Airtable,
+  Codepen,
+  Figma,
+  Framer,
+  Gist,
+  InVision,
+  Loom,
+  Lucidchart,
+  Marvel,
+  ModeAnalytics,
+  Numeracy,
+  RealtimeBoard,
+  Spotify,
+  Trello,
+  Typeform,
+  Vimeo,
+  YouTube,
+};