- 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
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@38820 a592a061-630c-0410-9148-cb99ea01b6c8