This reverts commit f0bf956837.
"Adds a back button to the UI"
First, minimal-ui takes up valueable screen space. We should value
the users screen space, and I believe users often install PWA's
_specifically_ to recover screen space taken by browser chrome[1]. I
know I do.
Second, devdocs already shows navigation arrows on mobile. A better
solution to a lack of back button (on desktop? where?) would be to
show those same navigation arrows there, rather than use minimal-ui.
Third, there's no rationale that I could find for this commit. No
explanation or issue linked. That's almost reason enough to revert.
Please write good commits: https://chris.beams.io/posts/git-commit/
[1] https://developer.mozilla.org/en-US/docs/Glossary/chrome