Update Westeros multinode tutorial for hints

[behnam-zakeri]

This PR updates the multinode tutorial for two reasons:

• shortening the code after resolving issue message_ix.Scenario.rename() does not work as expected #601
• adding hints for the in-depth questions

How to review

Please run Westeros multinode tutorial and make sure the hints provided at the end will work. You can copy-paste those code-based hints at the end of the tutorial and solve the illustrated scenario.

PR checklist

• Continuous integration checks all ✅
• [ ] Add or expand tests; coverage checks both ✅ Just adding hints to one tutorial
• Add, expand, or update documentation.
• Update release notes.

[behnam-zakeri]

@glatterf42 I added the code-based hints at the end of the tutorial. These can be opened by click. I couldn't'd wrap up the code block using "```", so the code block does not look optimal when the hint is clicked. Maybe you could help me with that.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.4%. Comparing base (023b91a) to head (06b0cd6).

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #798   +/-   ##
=====================================
  Coverage   95.4%   95.4%           
=====================================
  Files         46      46           
  Lines       4351    4351           
=====================================
  Hits        4153    4153           
  Misses       198     198           

Files	Coverage Δ
message_ix/tests/test_tutorials.py	97.6% <ø> (ø)

[glatterf42]

Looks good to me, thanks :)

The tutorial tests may be failing, but that's unrelated to this PR.

Just to be sure: even after reformatting the code (for which I used markdown and removed the html <code> directive), the code can only be copied by editing the cell, not immediately from the rendered output. Is that fine with you?

[behnam-zakeri]

Looks good to me, thanks :)

The tutorial tests may be failing, but that's unrelated to this PR.

Just to be sure: even after reformatting the code (for which I used markdown and removed the html <code> directive), the code can only be copied by editing the cell, not immediately from the rendered output. Is that fine with you?

Thanks @glatterf42 for reviewing this. Yes, the code needs to be copied to a new cell and be run. As far as I know it cannot be hidden in markdown cell and later be run as a code block.

[glatterf42]

@behnam-zakeri if the new name suits you, this PR is good to go :)

[behnam-zakeri]

Thanks, @glatterf42, the name sounds more intuitive and representative of the content. I believe this is ready to be merged.