The french translation has been contributed by Xavier Mehaut and Tugduall Grall, the spanisch translation by Andres Almiray, and the tranlation to brazilian portuguese has been provided by Marcos Silva Pereira.
Thank you very much for your help.
The installer supports silent installation with the command line option /S. When using this option you can influence which parts are installed using additional options:
Install Additional Packages
Set Installation Directory (mandatory)
Create File Associations
Install Native Launcher
The option /D is mandatory and points to the installation directory.
Working with the installer source