Improve the slurm interface

There are a number of fixes required to make the slurm interface user-friendly and accessible. This issue collects them.

• slurm submission should not require an accounting tag (9d8a435d)
• slurm submission needs a workaround for local-generation = True (i.e. when the cluster doesn't have network access which will be needed for downloading the data) (see #171 (closed)) (7c0a87c6)
• slurm submission needs some documentation (c53185c4)
• we need to incorporate the changes from !330 (closed) (2c8ec7da)
• ~~Turn off the automatic evictions for slurm ~~ (a218bc48)
• Turn off file transfer (d557993d)
• Enable --submit (4efb75b0)