.lang parser: don't store missing strings in TMX (#953)
.lang parser: don't store missing strings in TMX (#953)


mozfr/transvision,flodolo/transvision,pascalchevrel/transvision,mozfr/transvision,flodolo/transvision,flodolo/transvision,mozfr/transvision,mozfr/transvision,pascalchevrel/transvision,flodolo/transvision,pascalchevrel/transvision,pascalchevrel/transvision