Visible geozone and airport sync progress

Renames the two WebODM module entries to “WebODM Offline Plugin” and “WebODM Boundary Calculator”.
Adds official SkyMission geozones / no-fly zones to the standalone WebODM Boundary Calculator alongside worldwide airport orientation.
Shows the full last successful synchronization date and time for geozone sources in administration.
Integrates World Airports as an explicit task in the same automatic synchronization orchestration as all validated national geozone sources, including per-task progress and completion state.
Turns the protected geozone synchronization URL into a live browser status page with SkyMission branding, overall percent, per-country progress, World Airports progress and green completion indicators.
Keeps the same protected URL cron-compatible: non-browser / JSON calls execute the synchronization directly and return machine-readable JSON including the airport task.