beamer: cleaned up some unused packages; small changes on title page

workshops/latex/beamer/beamer.tex

@@ -7,24 +7,18 @@
 \providecommand\aspectratio{169}
 \documentclass[aspectratio=\aspectratio, xcolor=dvipsnames, ngerman]{beamer}
 
-%\usepackage[utf8]{inputenc}
-%\usepackage[T1]{fontenc}
-\usepackage[ngerman]{babel}
-%\usepackage{lmodern}
+\usepackage{polyglossia}
+\setmainlanguage{german}
 \usepackage{verbatim}
 \usepackage{dtk-logos}
-\usepackage{tikz}
-\usetikzlibrary{backgrounds, fit, matrix, calc}
 \usepackage{listings}
 \usepackage{calc}
 \usepackage{multimedia}
 \usepackage{mathtools}
-\usepackage{amsmath}
-\usepackage{amsthm}
 \usepackage{amssymb}
 \usepackage{amsfonts}
-\usepackage{dsfont}
-\graphicspath{{figures/}{examples/}}
+%\usepackage{dsfont}
+%\graphicspath{{figures/}{examples/}}
 \usefonttheme{professionalfonts}
 
 \usepackage[%
@@ -52,7 +46,7 @@
 
 %% libraries
 \usetikzlibrary{external}
-\usetikzlibrary{backgrounds, fit, decorations.pathreplacing, shapes.geometric, matrix, calc, fadings}
+\usetikzlibrary{calc}
 
 
 %% externalize
@@ -99,12 +93,9 @@
   moredelim=**[is][\smash]{@}{@}
 }
 
-\makeatletter
-\newcommand\notsotiny{\@setfontsize\notsotiny{7}{8}}
-\makeatother
 \setbeamersize{text margin left=6mm, text margin right=6mm}
 
-\date{05.06.2019}
+\date{5. Juni 2019}
 \title[\LaTeX-Workshop]{\LaTeX-Beamer}
 \subtitle{Präsentationen mit \LaTeX}
 \author{Valentin Bruch}
@@ -114,23 +105,6 @@
   und der Aachener Linux User Group
 }
 
-\newlength\marginwidth
-\newcommand\marginbox[3][2pt]{
-  % USAGE: \marginbox[margin width]{width}{content}
-  % TODO: width is set manually such that it fits real width!
-  \setlength\marginwidth{#1}
-  \begin{tikzpicture}[even odd rule, scale=1]
-    \node[anchor=north west] (text) {%
-      \begin{minipage}{#2-2\marginwidth-10pt}%
-        #3%
-      \end{minipage}%
-    };
-    \begin{pgfonlayer}{background}
-      \node[draw opacity=.5, draw=blue, line width=#1, inner sep=2pt, fit = (text)] {};
-    \end{pgfonlayer}
-  \end{tikzpicture}
-}
-
 \begin{document}
 
 \begin{frame}

workshops/latex/beamer/examples/title.tex

 % Präambel
 \date{\today}
-\title{\LaTeX-Beamer}
+\title[\LaTeX-Workshop]{\LaTeX-Beamer}
 \subtitle{Präsentationen mit \LaTeX}
 \author{Valentin Bruch}
 \institute[OSAK]{

workshops/latex/latex.tex

@@ -42,7 +42,7 @@
 \newcommand\notsotiny{\@setfontsize\notsotiny{7}{8}}
 \makeatother
 
-\date{05.06.2019}
+\date{5. Juni 2019}
 \title[Einführung in \LaTeX]{Einführung in \LaTeX}
 \author{Valentin Bruch}
 \institute[OSAK]{