Update node-test-parser to the latest release and fix error parsing

[msebastianb]

With the latests updates of the node test runner there are some inconsistencies in reported data:

Solution:

• Update node-test-parser
• Fix the parsing logic of the new error object on failing tests

Resolve #106

[simoneb]

Can you please post a screenshot which shows before and after the fix?

[msebastianb]

Thanks @simoneb for the review, before this fix in case of failing tests there's nothing shown. After the fix the reported result is similar to this one:

Looking at it probably something more for the reported stack of every failing test could be done, as you can see there is a repetition of the expected result inside the stack box, this happens due to some changes in the error message and probably using the stack parsing library in a different way could fix this. I'll take some time to give it a try.

[simoneb]

approved, merge away