http://bugzilla.lyx.org/show_bug.cgi?id=3413
* ui/QNomenclUi.ui
- description field: replace LineEdit with TexEdit
* QNomencl.C: take care of the \n <-> \\ conversion in the description field.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17748 a592a061-630c-0410-9148-cb99ea01b6c8