doc/flowchart: remove the gravest errors

IMHO it still has some issues with consistency and the level of detail
in some places...

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@4871 2fb0f335-1f38-0410-981e-8018bf24f1b0

doc/handbook/dumux-handbook.tex

@@ -21,7 +21,7 @@
 \usepackage{rotating}
 \usepackage{subfig}
 
-\usepackage{ulem}
+\usepackage[normalem]{ulem}
 \usepackage{tabularx}
 \usepackage{graphics}
 \usepackage{pstricks}