Updated NSIS japanese translation by hashimoto.
Add ommitted string in the NSIS translations.
Updated NSIS arabic translation by SDERAWI.
Updated NSIS norwegian translation by tomaso.
Updated NSIS norwegian translation by tomaso.
Updated NSIS galician translation by marcos.
Updated NSIS portuguese translation by marques.
Updated NSIS basque translation by aramendi.
Updated croatian translation by delakroa.