Remove component duplicated and apply various fixes

[ryaplots]

Summary

This PR integrates sidebar and header groundwork and removes component duplicates

Changes

• Remove old button
• Remove old dropdown
• Remove old navigation
• Remove old header
• Apply various fixes to make this work correctly

Testing

1. Run the console

Checklist

• Scope: The referenced issue is addressed, there are no unrelated changes.
• Compatibility: The changes are backwards compatible with existing API, storage, configuration and CLI, according to the compatibility commitments in README.md for the chosen target branch.
• Documentation: Relevant documentation is added or updated.
• The steps/process to test this feature are clearly explained including testing for regressions.
• Changelog: Significant features, behavior changes, deprecations and fixes are added to CHANGELOG.md.
• Commits: Commit messages follow guidelines in CONTRIBUTING.md, there are no fixup commits left.

[kschiffer]

Let's merge this and I'll work on some adjustments in the sidebar branch directly.