Post to Slack (#603)

* Migrations

* WIP: Integration model, slack perms / hooks

* So so rough it pains me. Building this new model is revealing just how much needs to be refactored

* Working connect and post

* Cleanup UI, upating documents

* Show when slack command is connected

* stash

* 💚

* Add documents.update trigger

* Authorization, tidying

* Fixed integration policy

* pick integration presenter keys

server/models/User.test.js

@@ -1,10 +1,11 @@
 /* eslint-disable flowtype/require-valid-file-annotation */
-import { flushdb, seed } from '../test/support';
+import { flushdb } from '../test/support';
+import { buildUser } from '../test/factories';
 
 beforeEach(flushdb);
 
 it('should set JWT secret and password digest', async () => {
-  const { user } = await seed();
+  const user = await buildUser({ password: 'test123!' });
   expect(user.passwordDigest).toBeTruthy();
   expect(user.getJwtToken()).toBeTruthy();