Document CICE scripts

[eclare108213]

especially ICE_RUNLENGTH

[eclare108213]

The CICE documentation still has create.case instead of cice.setup, with the old flags. That should be fixed soon!

[duvivier]

Oops, I just changed that all. Will do a PR soon.

[duvivier]

Just adding to this (as a list for my reference):

• The quickstart, user's guide, and developer's guides all need to be thoroughly tested and updated with the correct documentation in the *rst files.

List from @eclare108213 as part of Pull Request #106 (may not be complete):

• user_guide/ug_performance.rst: the test setup information should be put somewhere else. Is this duplicated in user_guide/ug_testing.rst? If so, just delete it here.
• user_guide/ug_running.rst: this is very old info, from cice v5! Maybe this is where to put setup info that's currently in ug_performance? We need to keep the table of environment variables.
• user_guide/ug_testing.rst: update the cice.setup flags and remove the version/date line at the top
• user_guide/ug_troubleshooting.rst: this is v5 info — update to v6
• Many of the new files contain text specific to Icepack, which needs to be changed for CICE. E.g.
developer_guide/dg_about.rst, dg_driver.rst, dg_scripts.rst
• remove all references to drupal (user_guide/ oceans11.lanl.gov/drupal)

[eclare108213]

If ICE_RUNLENGTH has been documented, this issue can be closed. I don't remember seeing that. ??

[apcraig]

ICE_RUNLENGTH is documented and I will close this, but we will need to review documentation before every release.