fight with formatting and add german abstract

Physics_Thesis_Template/main.tex

@@ -87,6 +87,7 @@
 \usepackage{textgreek} %allow for greek character in text, e.g. \textbeta
 
 \usepackage{setspace, graphicx, hyphenat, fancyhdr, ifthen, everypage, enumitem, setspace}
+\usepackage{xurl}
 \usepackage[pdfa]{hyperref}
 
 %\RequirePackage[dvipsnames]{xcolor}