(Cleanup) Moved latex headers into unified file. Adjusted md headers...

(Cleanup) Moved latex headers into unified file. Adjusted md headers accordingly. Removed lecture template, as it isn't needed anymore.

source/algebra-II-lecture-2019-03-08.md

 ---
-geometry: margin=1in
 header-includes: |
-  \usepackage{tikz}
-  \usetikzlibrary{calc,decorations.pathmorphing,shapes}
-  \usetikzlibrary{matrix}
-  \usepackage{fancyhdr}
-  \pagestyle{fancy}
-  \renewcommand{\footrulewidth}{0.4pt}
-  \fancyhead[CO,CE]{ETH Z\"urich - Algebra II - Prof. R. Pandharipande}
-  \fancyfoot[CO,CE]{\href{http://git.ethz.ch/rrueger/algebra-notes}{git.ethz.ch/rrueger/algebra-notes} - \href{mailto:rrueger@ethz.ch}{rrueger@ethz.ch}}
-  \fancyfoot[LE,RO]{\thepage}
+  \makeatletter
+  \def\input@path{{source/}}
+  \input{latex-headers.tex}
 ---
 
 \newpage

source/algebra-II-lecture-2019-03-15.md

 ---
-geometry: margin=1in
 header-includes: |
-  \usepackage{tikz}
-  \usetikzlibrary{calc,decorations.pathmorphing,shapes}
-  \usetikzlibrary{matrix}
-  \usepackage{fancyhdr}
-  \pagestyle{fancy}
-  \renewcommand{\footrulewidth}{0.4pt}
-  \fancyhead[CO,CE]{ETH Z\"urich - Algebra II - Prof. R. Pandharipande}
-  \fancyfoot[CO,CE]{\href{http://git.ethz.ch/rrueger/algebra-notes}{git.ethz.ch/rrueger/algebra-notes} - \href{mailto:rrueger@ethz.ch}{rrueger@ethz.ch}}
-  \fancyfoot[LE,RO]{\thepage}
+  \makeatletter
+  \def\input@path{{source/}}
+  \input{latex-headers.tex}
 ---
 
 \newpage
@@ -17,7 +10,7 @@ header-includes: |
 *Lecture 2019.03.15*
 
 # LECTURE 4
-
+Neuen Text!!
 In this lecture we will introduce two equivalences of the definition of a Galois extension that we saw last lecture. From now on we will refer to the inital definition as the **first equivalence**. We continue with the
 
 ## Second Equivalence

source/latex-headers.tex

+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{tikz}
+\usetikzlibrary{calc,quotes,angles,decorations.pathmorphing,shapes}
+\usetikzlibrary{matrix}
+\usepackage{fancyhdr}
+\pagestyle{fancy}
+\renewcommand{\footrulewidth}{0.4pt}
+\fancyhead[CO,CE]{ETH Z\"urich - Algebra II - Prof. R. Pandharipande}
+\fancyhead[RO,RE]{}
+\fancyhead[LO,LE]{}
+\fancyfoot[CO,CE]{\href{http://git.ethz.ch/rrueger/algebra-notes}{git.ethz.ch/rrueger/algebra-notes} - \href{mailto:rrueger@ethz.ch}{rrueger@ethz.ch}}
+\fancyfoot[LE,RO]{\thepage}

source/lecture.template

----
-geometry: margin=1in
-header-includes: |
-    \usepackage{fancyhdr}
-    \pagestyle{fancy}
-    \renewcommand{\footrulewidth}{0.4pt}
-    \fancyhead[CO,CE]{ETH Z\"urich - Algebra II - Prof. R. Pandharipande}
-    \fancyfoot[CO,CE]{\href{http://git.ethz.ch/rrueger/algebra-notes}{git.ethz.ch/rrueger/algebra-notes} - \href{mailto:rrueger@ethz.ch}{rrueger@ethz.ch}}
-    \fancyfoot[LE,RO]{\thepage}
----
-
-*Lecture <DATE>*
-
-# RECAP
-
----
-
-# LECTURE <N>
-
----
-
-# SUMMARY