Clean the remote workdir as default and provide checkbox for not clean up

[unkcpz]

Is your feature request related to a problem? Please describe.
In the THEOS testing server, the storage space of active user increased dramatically. The issue comes from that the calculation folder is not cleaned up if run in localhost.

Describe the solution you'd like
Clean up the remote workdir if the calculation finished successfully, provide the widget to tick the option to turn off clean up.

[AndresOrtegaGuerrero]

I think that this feature could be a checkbox in the AdvancedSetting tab

[mbercx]

Hmm, just off the top of my head: clean_workdir is an input of each work chain, and is not dynamically changed if the work chain fails. So I guess keep this to False (which will be default from the next release), and then use a similar implementation as in the on_terminated to clean if successful.