- many moons ago when Ghost started PRIVACY.md was a convention some projects were adopting
- however, it never caught on, and we haven't kept ours up to date
- therefore we are removing this file because the file itself is defunct and not
as any reflection of Ghost's attitude to privacy

ref
eba8c4d
ref
https://github.com/TryGhost/Ghost-Moya/actions/runs/16660745091/job/47157061575#step:14:792

The ref'd commit removed the PRIVACY.md file, but there is a step in the
monobundle.js script (part of the docker build process) which tries to
copy the PRIVACY.md file, which is now failing. This fixes that.

ref
https://linear.app/ghost/issue/PROD-2377/analytics-growth-top-content-sources-shows-paid-related-columns

- In Post Analytics > Growth, paid membership related columns are
displayed in the Top Sources table even though paid membership is turned
off for the publication.

no ref

- Added a link to Tinybird in Settings / Analytics description to
improve feature discoverability
- Updated Tinybird link for self-hosters in Analytics settings
- Updated README to point to new Tinybird link

no ref.

- The copy of Explore settings was outdated for the 6.0 launch

ref
https://linear.app/ghost/issue/PROD-2377/analytics-growth-top-content-sources-shows-paid-related-columns

- In the main post list and Analytics top post list stats popup, paid
membership related columns are displayed in the Top Sources table even
though paid membership is turned off for the publication.
- In Analytics > Top Posts, the hover behaved similarly.
- Aligned display of labels between the two hovers.

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Co-authored-by: Steve Larson <9larsons@gmail.com>