remove lipsum package and add \aj macro from Astronomical Journal

Physics_Thesis_Template/main.tex

@@ -63,6 +63,7 @@
 \newcommand{\apjs}{The Astrophysical Journal Supplement}
 \newcommand{\nphysa}{Nuclear Physics A}
 \newcommand{\prd}{Physical Review D}
+\newcommand{\aj}{The Astronomical Journal}
 
 \usepackage{xspace}
 \newcommand{\Figure}[1]{Figure\,\ref{#1}\xspace}
@@ -156,7 +157,6 @@
 \usepackage[english]{babel} % babel system, adjust the language of the content
 \usepackage{silence}
 \WarningFilter{latex}{Text page}
-\usepackage{lipsum}
 \usepackage[					% clean thesis style
 	figuresep=colon,%
 	sansserif=false, % true wäre CI standard