Add test scripts to "Tests" view.

Add the possibility to display the scripts of a test case, in the Tests view.

The situation is the following, once checking autotests failures, we check the screenshot and the error message. We would normally also check the scripts to try to understand what if failing, what needs to be fixed, etc. That is not available in the Tests view.

I suggest this being an extra tab, next to the screenshot tab for example.