Allow drag&drop job folder into admin console

[holgerroth]

Is your feature request related to a problem? Please describe.
In Ubuntu, when dragging a folder containing the job config into the terminal running the admin console, it adds '-quotes to the filename. This causes an error when trying to submit the job:

> submit_job '/home/hroth/Code2/nvflare/splitnn/examples/cifar10/cifar10-splitnn/job_configs/cifar10_splitnn'
'/tmp/nvflare/poc/admin/startup/../transfer/'/home/hroth/Code2/nvflare/splitnn/examples/cifar10/cifar10-splitnn/job_configs/cifar10_splitnn'' is not a valid folder.

The '-quotes have to be manually deleted for the submit to work.

Describe the solution you'd like
Allow the file path including '-quotes (maybe also "-quotes) to be submitted.

Describe alternatives you've considered
n/a

Additional context
n/a

[nvkevlu]

I can look into this. We could parse the value and remove the single quotes if detected, but it seems that single quotes are actually valid characters in directory and file names, at least on Ubuntu, so I will see what to do for this handling this case.