Inform user of which sample/s failed

[oskarvid]

If a user is running a large number of samples and one or more samples fail, it is very tedious, and potentially difficult, for a user to figure out which samples failed. An error message at the end of the workflow that says something like "sample 1, 2 and 3 failed" would improve the usability of the workflow.

Another issue with failing samples during multi sample executions is that there is no error message during the execution of the workflow saying that the other samples will keep running, this needs to be added too.