New command that runs non-interactively

[Erik Schnetter]

SimFactory should offer a command that is halfway in between "submit" and run". This command should start a simulation immediately, but should run it in the background while redirecting stdout and stderr to the usual locations in the simulation's output directory.

Technically, this command would be on the same level as "submit", while "run" would reside at a lower level. For example, "run" would expect an active simulation (and would not activate a simulation), while this new command would activate the simulation.

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