Improved czech support in PDF template

templates/invoice.tex

@@ -1,6 +1,8 @@
 \documentclass[10pt]{article}
 \usepackage[utf8]{inputenc}
-\usepackage[czech]{babel}
+\usepackage[T1]{fontenc}
+\usepackage{lmodern}
+%\usepackage[czech]{babel}
 \usepackage{a4wide}
 \usepackage{tabularx}
 \renewcommand{\familydefault}{\sfdefault}