Travis ui tests (#57)

* Prepare travis is tests

* Fix ffmpeg travis source

* Trying xenial

* Move shell scripts

* Upload video assets

* Upload video assets

* Change text input method

* Add ui test docker support

* Fix travis docker build

* Fix asset uploader

* Fix dockerfile

* Update dockerfile

* Change writeText behavior

* Fix type error

* Fix exit codes

* Fix types

* fix upload

* Fix writeText

* Fix argument name

* Add test scenarios

* Enable vnc and change mqtt host

app/src/components/Sidebar/Publish/Publish.tsx

@@ -144,6 +144,7 @@ class Publish extends React.Component<Props, State> {
         size="small"
         color="primary"
         onClick={this.publish}
+        id="publish-button"
       >
         <Navigation style={{ marginRight: '8px' }} /> Publish
       </Button>