J3Cub: Transparent fuel sight gauge
J3Cub: Animate fuel in sight gauge
J3Cub: Fix typo in fuel sight gauge, red fuel ball
777: fix bad model references.
Libelle: fix (partly) ground handling
777: small improvements of payload dialog
J3Cub: Animate pa-18 fuel gauges
J3Cub: Fix slip ball, install primer system, refactor magneto control
J3Cub: Panel glass effect adjustments
J3Cub: Gauge material settings and texture edits
