Bug 1059317 - Move talos stats to a separate panel

This patch creates a new panel dedicated to the talos results.
The way the talos panel is enabled and disabled is a bit hacky, but for now we don't have any other exception like this. We may want to think about a more elegant solution if we face another case like this in the future
Can't we use job_type, since for talos jobs it will be 'talos' vs 'unitest'?