- since NSIS 3 Unicode is allowed and even required.
The first installer for RC1 used the non-Unicode and therefore users of non-Latin script languages could not see readable text in the installer.
- also remove some JabRef residues
- dictionaries.nsh: code documentation and simplification
- lyx.nsi: comment out currently unused code
- init.nsh: some corrections and fix bug that info that JabRef and MiKTeX were installed together with LyX was deleted before the uninstaller was really run
- LaTeX.nsh: documentation and fix a bug (for an unknown reason SHCTX can be used to read and delte but not to write in the registry)
- gui.nsh: enable descriptions
- detection: move dictionary code to dictionaries
