improve stuff again

assets/translations/en.json

assets/translations/es.json

assets/translations/fr.json

assets/translations/it.json

lib/models/membership_renewal.dart

lib/models/queries_indexer.dart

lib/models/wallet_header_data.dart

lib/providers/duniter_indexer.dart

lib/providers/my_wallets.dart

lib/providers/substrate_sdk.dart

lib/providers/wallet_options.dart

lib/screens/debug_screen.dart

lib/screens/identity/confirm_identity.dart

lib/screens/myWallets/import_g1_v1.dart

lib/screens/myWallets/manage_membership.dart

lib/screens/myWallets/migrate_identity.dart

lib/screens/myWallets/wallet_options.dart

lib/screens/settings.dart

lib/screens/wallet_view.dart

lib/widgets/certifications.dart