RTL examples are not tested with screener

[mnajdova]

Feature Request

Problem description

We don't have any screen tests for the RTL examples. We may break some of the RTL functionalities without noticing.

Proposed solution

We can mark some examples that are RTL representative and test them with RTL applied. This will allow us to catch any RTL related regressions on our PRs.

[miroslavstastny]

See related PR #98 for some additional comments.

[layershifter]

Fixed in #792.