Feat/311/skeleton v1 update

[jouwdan]

Please check if the PR fulfills these requirements

• The commit message is sensible and easily understood
• Tests for the changes have been added (for bug fixes / features where relevant)
• Docs have been added / updated (for bug fixes / features where relevant)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

What commits does this PR relate to?

• feat: skeleton v1 version bumps (0eeef5f)
• feat: migrate menus to popups (943eac1)
• fix: search bar (21a774d)
• fix: course unit width (b6a8eec)
• fix: dark mode (dda5d2d)
• fix: theme builder (3113332)
• fix: darkmode (5a36e6e)

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