chore(print): switch all letters to sans serif font

templates/letter/din5008.latex

@@ -66,7 +66,8 @@ $endif$
   % if luatex or xetex
   \usepackage{fontspec}
   \setmonofont{DejaVu Sans Mono}
-\fi 
+\fi
+\renewcommand{\familydefault}{\sfdefault}
 
 $if(mathspec)$
   \ifXeTeX

templates/letter/din5008with_pin.latex

@@ -67,6 +67,7 @@ $endif$
   \usepackage{fontspec}
   \setmonofont{DejaVu Sans Mono}
 \fi 
+\renewcommand{\familydefault}{\sfdefault}
 
 $if(mathspec)$
   \ifXeTeX

templates/letter/plain_article.latex

@@ -51,15 +51,19 @@ $endif$
 \fi
 
 \ifPDFTeX
+  \usepackage{helvet}
   \usepackage[$if(fontenc)$$fontenc$$else$T1$endif$]{fontenc}
   \usepackage[utf8]{inputenc}
-  \usepackage{textcomp} % provide euro and other symbols
-  \usepackage{DejaVuSansMono} % better monofont
+  \usepackage{textcomp}% provide euro and other symbols
+  \usepackage{DejaVuSansMono}% better monofont  
+  \renewcommand{\familydefault}{\sfdefault}
 \else 
   % if luatex or xetex
   \usepackage{fontspec}    
+  %\setmainfont{TeXGyreHeros}%could not install the package somehow tex-gyre in default.nix/shell.nix did not work
+  \setmainfont{DejaVu Sans}
   \setmonofont{DejaVu Sans Mono}
-  %\renewcommand{\familydefault}{\sfdefault}
+  \renewcommand{\familydefault}{\sfdefault}
 \fi 
 
 $if(mathspec)$

test/Database/Fill.hs

@@ -932,7 +932,7 @@ fillDb = do
                 <section>
                   <h3>Benötigte Unterlagen
                   <ul>
-                    <li>Sehtest,
+                    <li>Sehtest, #
                       <i>bitte vorab hochladen!
                     <li>Regulärer Führerschein,
                       <i>Bitte mitbringen.