Eliminate compact window style; add "put tabs in title bar" to appearance prefs
This was a suggestion in #7722 (closed). It's annoying that compact + minimal go together like chocolate and peanut butter but the settings couldn't be farther apart. Bring them together by having a global switch for whether tabs go in the title bar.
It means changing windows' styles at runtime, which sucks because the NSWindows will need to be recreated somehow. Maybe I can play games with window arrangements to do this.
- The "whats new" text would need to be updated
- Audit the documentation to find references to the compact window style
- Ensure new windows conform to the global setting even if that conflicts with the saved value, e.g. when restoring an arrangement.