Allow to run a pipeline in an advanced mode allowing to skip some steps, or restart from a step, like the last failed step.

[pombredanne]

At times, when I scan a large codebase, and that the pipeline may fail, I would like Allow to (re)run a pipeline allowing to skip some steps, or to restart from a step at the last failed ste, skipping the prior steps.

This could be in an advanced mode, or only visible in the run log popup. It would be useful when there is a long running archive extraction or long running matching step that I do not want to re-execute.

[tdruez]

@pombredanne #1310 merged in main.