Add Frédéric and Johannes to userguide; remove useless spam obsfuscating

(cherry picked from commit db2999d8)

doc/userguide/UserGuide.tex

@@ -78,14 +78,16 @@ Thanks very much for your patience and good ideas. Please write either direclty
 Dynare was originally developed by Michel Juillard in Paris, France. Currently, the development team of Dynare is composed of
 
 \begin{itemize}
-\item Stphane Adjemian (stephane.adjemian``AT''univ-lemans.fr)
-\item Houtan Bastani (houtan``AT''dynare.org)
-\item Michel Juillard (michel.juillard``AT''mjui.fr)
-\item Junior Maih (junior.maih ``AT''gmail.com)
-\item Ferhat Mihoubi (ferhat.mihoubi``AT''univ-evry.fr)
-\item George Perendia (george``AT''perendia.orangehome.co.uk)
-\item Marco Ratto (marco.ratto``AT''jrc.ec.europa.eu)
-\item Sbastien Villemot (sebastien``AT''dynare.org)
+\item Stphane Adjemian \texttt{<stephane.adjemian@univ-lemans.fr>}
+\item Houtan Bastani \texttt{<houtan@dynare.org>}
+\item Michel Juillard \texttt{<michel.juillard@mjui.fr>}
+\item Frdric Karam \texttt{<frederic.karame@univ-lemans.fr>}
+\item Junior Maih \texttt{<junior.maih@gmail.com>}
+\item Ferhat Mihoubi \texttt{<ferhat.mihoubi@univ-evry.fr>}
+\item George Perendia \texttt{<george@perendia.orangehome.co.uk>}
+\item Johannes Pfeifer \texttt{<jpfeifer@gmx.de>}
+\item Marco Ratto \texttt{<marco.ratto@jrc.ec.europa.eu>}
+\item Sbastien Villemot \texttt{<sebastien@dynare.org>}
 \end{itemize}
 
 Several parts of Dynare use or have strongly benefited from publicly available programs by G. Anderson, F. Collard, L. Ingber, O. Kamenik, P. Klein, S. Sakata, F. Schorfheide, C. Sims, P. Soederlind and R. Wouters.