Add info about viewing compiled docs via www at NERSC

[matthewhoffman]

This merge adds information about how to view compiled documentation via NERSC's web Science Gateway to avoid needing to scp the compiled documentation locally.

Checklist

• Developer's Guide has been updated
• Documentation has been built locally and changes look as expected

[matthewhoffman]

Additional information may need to be added about setting the permissions correctly on files and dirs in the www directory so they are visible from the internet. (cc: @andrewdnolan )

[xylar]

Yep, that looks good. We could add similar instructions for Compy, Anvil and Chrysalis in the future since they all have web portals.

[matthewhoffman]

@xylar , I'll add Anvil/Chrysalis to the PR, but I don't think my compy access is working. I also need to add the chmod command needed to make the docs visible to the web. Thanks to @andrewdnolan for pointing that out.

[xylar]

A chmod shouldn't be necessary on Anvil/Chrysalis but it is on Perlmutter.

[xylar]

I don't think we have a lot of Compy users, so that's fine,

[xylar]

@matthewhoffman, maybe we can get this finished up (see suggestion above).

[matthewhoffman]

@xylar , thanks for providing the suggestion for this. I committed a modified version of your suggestion and confirmed the instructions worked correctly on Anvil and the results look correct. I have not tried the updated instructions with the chmod command for Perlmutter, but I can try that tomorrow if it's back up if you haven't confirmed it's correct already.

[xylar]

@matthewhoffman, yes, the command I added is one I use on Perlmutter all the time so I know that it is correct.