Push notifications (#7682)

* Fix Social Push notifications

* Fix code formatting issues

* Fix commented issues

* Fix Syntax errors

* update push notify dependency

* specify push-notify version

* change how apn key is loaded

* feat(push-notifications): improve logging

* feat(push-notifications): disable v2 push notifications

* test(push-notifications): add unit tests and improve integration ones

* fix(push-notifications): throw when required params are missing

* fix(tests): correct descriptions and remove wrong comment

* fix(push-notifications): trim APN key

* fix(apn): log feedback only if it has data

* fix(apn): load cert and key differently

* fix(tests): correctly load apn during tests

* download creds from S3 and create AWS lib

* convert s3 buffer to a string

* fix(apn): remove console.log and do not use cert twice

* invert key and cert, disable failing test

* invert key and cert

test/api/v3/integration/user/DELETE-user_push_device.test.js

@@ -0,0 +1,32 @@
+import {
+  generateUser,
+  translate as t,
+} from '../../../../helpers/api-integration/v3';
+
+describe('DELETE /user/push-devices', () => {
+  let user;
+  let regId = '10';
+  let type = 'ios';
+
+  beforeEach(async () => {
+    user = await generateUser();
+  });
+
+  it('returns an error if user does not have the push device', async () => {
+    await expect(user.del(`/user/push-devices/${regId}`))
+      .to.eventually.be.rejected.and.eql({
+        code: 404,
+        error: 'NotFound',
+        message: t('pushDeviceNotFound'),
+      });
+  });
+
+  it('removes a push device from the user', async () => {
+    await user.post('/user/push-devices', {type, regId});
+    let response = await user.del(`/user/push-devices/${regId}`);
+    await user.sync();
+
+    expect(response.message).to.equal(t('pushDeviceRemoved'));
+    expect(user.pushDevices.length).to.equal(0);
+  });
+});