Fix coding of german characters (Umlaut, ...)

The line
\usepackage[applemac]{inputenc}
is added and commented out because I don't know exactly what is needed
on a macOS, maybe all works fine as it is there as well, as it should
do on Linux.

.gitignore

@@ -4,6 +4,7 @@
 *.dvi
 *.toc
 *.pdf
+*.out
 
 # Editor backups
 *~

rpi/formatAndDefs.tex

 \usepackage{amsmath,amssymb}             % AMS Math
-% \usepackage[french]{babel}
-\usepackage[latin1]{inputenc}
-\usepackage[T1]{fontenc}
 \usepackage[left=1.5in,right=1.3in,top=1.1in,bottom=1.1in,includefoot,includehead,headheight=13.6pt]{geometry}
 \renewcommand{\baselinestretch}{1.05}
 

rpi/rpi.tex

-%\documentclass[a4paper,11pt,twoside,english]{ThesisStyle}
-\documentclass[article,a4paper,10pt,twoside,openany,ngerman]{ThesisStyle}
-%\usepackage[Bjornstrup]{fncychap}
+\documentclass[article,a4paper,10pt,twoside,openany]{ThesisStyle}
 \usepackage[ngerman]{babel}
-\usepackage[latin1]{inputenc}  % deutsche Umlaute
+%\usepackage[applemac]{inputenc}
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
 \usepackage{babel,blindtext}
 \usepackage{xcolor}
 \usepackage{colortbl}