l10n: NSIS German update

(cherry picked from commit 1f70a1d67dbf8ca616d40e1260a58f5a1058f60b)
Signed-off-by: Rafaël Carré <funman@videolan.org>
l10n: NSIS Polish update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
(cherry picked from commit a7170eee8648f9f02d7de22fe9203b83c599651d)
Signed-off-by: Rafaël Carré <funman@videolan.org>
l10n: NSIS Dutch update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
(cherry picked from commit 5280d37fe2edcfc3402ef339457e3f959ff4a9db)
Signed-off-by: Rafaël Carré <funman@videolan.org>
NSIS: fix polish translation

(cherry picked from commit 35c5354c363d30119edccb0c0d5d9d26b68fd753)
Signed-off-by: Rafaël Carré <funman@videolan.org>
l10n: NSIS Polish update

Signed-off-by: Christoph Miebach <christoph.miebach@web.de>
(cherry picked from commit 5aebac3078b586fcd72ba17b01e934a45431370c)
Signed-off-by: Rafaël Carré <funman@videolan.org>
nsis: fix encoding of translations

As of now, NSIS doesn't fully support unicode so it is better to use
their iso 8859 counterpart.

ISO-8859-1:
- Dutch
- German

ISO-8859-2:
- Polish
- Slovenian

(cherry picked from commit 02a8a0326001760195383e03bb04a047919fe09f)
Signed-off-by: Rafaël Carré <funman@videolan.org>
nsis: use windows-1250 encoding for Polish and Slovenian (fix #10126)

(cherry picked from commit 7d48c11c0c5068cb388e8ea45277ce89b68535dc)
Signed-off-by: Rafaël Carré <funman@videolan.org>
l10n: Updating and adding installer files

(cherry picked from commit 47f740e7e0da787f44a0ec7d56985505e0c1a4aa)
Signed-off-by: Rafaël Carré <funman@videolan.org>
nsis danish translation: fix quoting