NavAid Android APK v1.21.0

Brings the built-in CVFR chart back, and keeps it.

• Restores the built-in chart. Installing 1.21 over 1.20 copies the built-in CVFR tiles (zooms 7–12) back into the phone's chart storage, with no download. An earlier Clear offline CVFR had removed them.
• Clear offline CVFR now keeps them. It removes only what you downloaded beyond the built-in chart (e.g. zoom 13). The question says so: "The built-in chart (zooms 7–12) stays."
• Flight plan on a phone: the whole plan scrolls, so every leg is reachable at any font size, and the legs / NM / time / fuel line is readable in the dark theme.
• Nothing is cut off at a larger phone font: checked up to 200%. The bottom bar grows with its labels, and buttons and fields widen or wrap.
• The world map shows major cities (capitals and cities of a million or more), in English and Hebrew.
• Update fixes:
  • a full phone no longer blocks updates;
  • an update already downloaded is not downloaded again;
  • the Save row is lighter.

versionCode 21. Signed with the same key as 1.20, so it installs over it. Don't uninstall first: that erases your saved routes.

Install: open the APK and allow "install unknown apps". With Obtainium it shows up as an update.