Add support for the \bar command (overline) to latex_to_html. That command

is used by the PCA's introduction.tex.

Manual_tools/src/latex_converter_config/html/latex.sty

@@ -1118,6 +1118,7 @@
 \newcommand{\grave}{\`}
 \newcommand{\tilde}{\~}
 \newcommand{\ddot}{\"}
+\newcommand{\bar}[1]{\lcRawHtml{<span style="text-decoration: overline;">#C1</span>}}
 
 % dummy commands to turn testsuite N's to Y's
 \newcommand{\nolimits}{}