[v1.2.1] Fix of difference between oneside and twoside

Fix different layouts in one side and two side versions. Fix of unnumbered introduction chapter.

text/text.tex

 % Do not forget to include Introduction
 %---------------------------------------------------------------
-% \chapter{Introduction}
+\chapter{Introduction}
 % uncomment the following line to create an unnumbered chapter
-\chapter*{Introduction}\addcontentsline{toc}{chapter}{Introduction}\markboth{Introduction}{Introduction}
+%\chapter*{Introduction}\addcontentsline{toc}{chapter}{Introduction}\markboth{Introduction}{Introduction}
 %---------------------------------------------------------------
 \setcounter{page}{1}