use Xenial on Travis (#1201)

* small changes

* forgot file

* use travis xenial

* delete commented line

* revert unrelated changes

.travis.yml

@@ -1,7 +1,8 @@
-dist: trusty
+dist: xenial
 sudo: required
 services:
   - docker
+  - xvfb
 addons:
   chrome: stable
 language: node_js
@@ -16,7 +17,6 @@ before_install:
   - sudo /etc/init.d/postgresql stop
   - npm install -g npm@latest
   - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
   - sleep 3
 
 stages:

e2e/components/breadcrumb/breadcrumb.ts

@@ -53,7 +53,7 @@ export class Breadcrumb extends Component {
   }
 
   async getAllItems() {
-    return this.items.map(async elem => {
+    return this.items.map(async (elem: ElementFinder) => {
       const str = await elem.getText();
       return str.split('\nchevron_right')[0];
     });