Improving conda docs

[kathatherine]

Summary

This epic is for organizing the work around improving the conda docs:

• streamlining the backend organization
• improving user flow
• updating out of date information

Linked Issues & PRs

• Next-gen documentation infrastructure #777
• Rework landing page #747
• Revamp Sphinx theme #750
• Duplicated contributing page is out of sync with conda/conda #745
• Fix broken redirects in conda documentation conda#13354

Implement new theme for associated projects

• Implement conda-sphinx-theme for conda conda#13300
• Implement conda-sphinx-theme for conda-build conda-build#5061
• Implement conda-sphinx-theme for conda-docs #903

Open pull requests for initial launch 🚀

conda-docs

• Adding conda-sphinx-theme and redesign of front page #900

conda

• Add conda-sphinx-theme theme to main conda#13298
• Add conda-sphinx-theme to 23.10.x conda#13331

conda-build

• Add conda-sphinx-theme to conda-build 3.27.x conda-build#5073
• Add conda-sphinx-theme to conda-build main conda-build#5067

[travishathaway]

Brief update on this epic. We have been doing quite a bit of work for the new conda.org website. More information about that here. As we pick up this work again, let's make sure that the themes closely align with each other. For example, we should probably be using the same CSS files, especially as it relates to colors and fonts.

[travishathaway]

@kathatherine, I think it's safe to close this issue considering we've completed all the listed issues for it 😄 🙌 🎉.