Replace energy mix factsheet section with a retirement notice

[aaccensi]

Context

The visuals depicted in the scenario energy mix infographic and the texts and charts in the scenario report are outdated and can become confusing. They often fail to load when we change the modelling, and we only find out during deploy testing, which makes them even more of a burden.

Implemented changes

• etsource: Deleted all associated GQL queries and input files related to Energy mix infographic and Scenario report.
• etmodel: Removed the Energy mix infographic and replaced the Scenario report with a deprecation notice.
• etengine: Added a migration removing input_element_energy_mix_capacity_per_unit_wind_turbine_inland.
• documentation: Replaced energy mix factsheet section with a retirement notice.

Related

Closes quintel/etmodel#4651

This effort is composed of the following 4 PRs:

• etsource: Retire report etsource#3425
• etmodel: Retire energy mix entirely and replace scenario report by retire notice. etmodel#4668
• etengine: Migration to remove input only used in the Energy Mix infographic. etengine#1716
• documentation: Replace energy mix factsheet section with a retirement notice #298 [THIS ONE]

Checklist

• I have tested these changes
• I have updated documentation as needed
• I have tagged the relevant people for review

[mabijkerk]

@aaccensi I would add a label/'tag' to the energy mix page, like the one @kndehaan just added for the scenario tools in 4bbf787

[aaccensi]

It doesn't have enough space using the the new tag as is:

So I reduced the font in the tag (notice this also affects the other section with this tag):

If this font reduction is not desired, we could restore the previous size and make it fit by changing the title of that page to "Energy mix" instead of "Energy mix infographic" or some other text that still fits. Notice that this would also change the text everywhere: the sidebar, the navigation path, and the page header.

[mabijkerk]

@aaccensi we can also rename it to 'retiring'

[aaccensi]

Yeah, that looks quite nice in my opinion:

[mabijkerk]

Nice!