\documentclass[12pt]{article}

\usepackage[utf8]{inputenc}
\usepackage[onehalfspacing]{setspace}
\usepackage{geometry}
\geometry{
	a4paper,
	width=150mm,top=15mm,bottom=25mm,
	headheight=15pt,
	includehead,
	marginparwidth=2cm
}

\usepackage{graphicx} 					% for figures
\usepackage{todonotes} 					% for todo notes
\usepackage{url}						% for filepaths and urls
\usepackage{hyperref}					% for hyperlinks

% configure headers
\usepackage{fancyhdr} 					% for headers
\usepackage{ragged2e} 					% for aligning in page headers
% \lhead{\parbox[t]{0.5\textwidth}{\RaggedRight\rightmark\strut}}
% \rhead{\parbox[t]{0.5\textwidth}{\RaggedLeft\leftmark\strut}}
% \setlength{\headheight}{5\baselineskip}
\pagestyle{fancy} 

% configure listings
\usepackage{listings} 					% for code highlighting
\usepackage{color} 						% for defining colors in jslistings 
\input{custom-listing.tex}

\setlength\parindent{0pt} % disable indentation for paragraphs


\begin{document}
\pagenumbering{gobble} % suppress page numbering

\begin{titlepage}
   \begin{center}
       \vspace*{1cm}
 
       \textbf{Master Thesis}
 
       \vspace{0.5cm}
        Subtitle
 
       \vspace{1.5cm}
 
       \textbf{Alfred Melch}
 
       \vfill
 
       A thesis presented for the degree of\\
       Master of Science
 
       \vspace{0.8cm}
 
       \includegraphics[width=.4\textwidth]{images/uni-augsburg.jpeg}
 
       Department Name\\
       University Name\\
       Country\\
       Date

   \end{center}
\end{titlepage}

\section*{Abstract}
Abstract goes here
\newpage

\tableofcontents
\newpage

\setcounter{page}{1}
\pagenumbering{arabic}

\input{chapters.tex}

\lstlistoflistings
\newpage

% \input{gliederung.tex}

\end{document}