audiocd_encoder_flac - en to de translation catalogue (2 entries)

note: i18n: ectx: label, entry (flac_compression_level), group (Flac)
en: Flac compression level
de: Flac-Komprimierungsstufe

note: i18n: ectx: property (title), widget (QGroupBox, groupBox)
en: Flac Compression Level
de: Flac-Komprimierungsstufe
