Enable greenkeeper

Summary:
Close https://github.com/facebook/flipper/pull/580

This enables Greenkeeper with some caveats:

- I disabled a bunch of upgrades we know currently break:
  - React
  - Emotion
  - Electron/Electron-Builder
- The bot isn't CLA-whitelisted yet, so we won't be able to directly import yet.
- It might actually be better to have automatic tasks created for the dependencies above breaking.
- Something changed in the prop types and required `StatusBar` to have its signature changed.

allow-large-files

Reviewed By: jknoxville

Differential Revision: D17906693

fbshipit-source-id: f73fe231518f56a6f6114f761d5e5e5528d0d487

src/chrome/StatusBar.tsx

@@ -40,7 +40,7 @@ export function statusBarView(props: Props): ReactElement | null {
   }
 }
 
-export default connect<Props, void, void, State>(
+export default connect<Props, void, {}, State>(
   ({application: {statusMessages}}) => {
     if (statusMessages.length > 0) {
       return {statusMessage: statusMessages[statusMessages.length - 1]};