visual test and ci automation

[eritikass]

visual test:

NB: take screenshots before/after for each operation
screenshot names should contain info if this test is executed locally, in ci for push or scheduled job.

1. open any site that allows making posts (forum, twitter...?)
2. log in
3. assert that you are logged in successfully
4. create a post that contains a current date and time
5. assert that post was made
6. upload screenshots into the cloud (s3, dropbox, ...) for later checking

screenshots uploaded should be separated:
- local test runs
- ci push
- ci scheduled

running the test

1. test should be run in ci
   • for each push
   • automatically once a day

NB: all code should be linted by ESLint, use airbnb styles.