[golemfactory/golem] expose testing tasks via cli (#3062)

> Not sure maybe it’s a good idea to check task name length here.

Ignore this, I solved in electron side as you mentioned.

> Could you elaborate more on that? Steps to reproduce or something?

This local task «Atv Buggy» started after «Pavillion missing» task and results are belong to «pavillion missing» when I have the results.
screen shot 2018-08-20 at 12 00 55

Same for the other way around for «Pavillion missing» task, results belong to «Atv Buggy» one.

screen shot 2018-08-20 at 12 01 18

You can reproduce the same thing if you have one blend project folder with missing assets and one without.