update nsis to the 3.0 version

This will allow us to build unicode installer (https://sourceforge.net/projects/nsis/) ->allow to install on chinese Windows

see https://nsis.sourceforge.io/Reference/Unicode

Updates in the org.txm.setups/shared/win/txm.nsis file:

• use “Unicode True” at the
• change the file encoding to UTF-8

Temporary workaround: avoid using non-ASCII characters in TXM files

(from redmine: issue id 2931, created on 2020/11/02 by Matthieu Decorde)

added priority::high setup type::task + 1 deleted label

changed milestone to %TXM 0.8.2

SLH : Je propose une autre solution (plus rapide et sûrement plus robuste à long terme) : ne pas utiliser de caractères non ASCII dans les chemins utilisés par TXM.

(from redmine: written on 2020/11/02 by Serge Heiden)

done with r2956

(from redmine: written on 2021/06/02 by Matthieu Decorde)

closed

assigned to @mdecorde