scripts: move state polling into jsa_proc script
scripts: add --no-etransfer option to poll command
scripts: make --job-id opt. consistent with others

Now --job-id rather than --job_id to match the other options.
scripts: move fetch and run tasks into jsa_proc

The "assemble_data_and_advance" and "run_job" scripts have been
amalgamated into the "jsa_proc" script.  The integer option
handing from the etransfer sub-command has been brought to the
top of the script so that it can easily be applied to multiple
options for multiple sub-commands.
scripts: move docopt import to the top of jsa_proc