AppState0: rethrow logged exception
refactoring + i18n
- rename package sandbox to jme3_skel to allow reuse
- move *.fxml under Interface/
- move *.css under Interface/
- replace Page + FXMLHud by HudTools + Hud
- *.fxml no longer define Controller
- start i18n of Hud via ResourceBundle (Interface/labels.properties)
- FXMLLoader created and initialized by dagger
- use AppSettingsLoader to define how load/save AppSettings
clean logging's configuration
try to fix the 'QUIT' of the application : no longer pending jvm