adapt FOSS to present date

FOSS_course/data/web_os.csv

 Name,percent
-Unix,71.4
-Windows,28.6
+Unix,71.0
+Windows,29.0

FOSS_course/data/web_servers.csv

 Name,percent
-Apache,40.5
-Nginx,31.7
-Cloudflare Server,13.2
-Microsoft-IIS,7.8
-other,5.8
+Apache,36.1
+Nginx,32.5
+Cloudflare Server,16.0
+Microsoft-IIS,7.7
+other,7.7

FOSS_course/slides.tex

 \input{../.style/header}
 
 \title{Free and Open Source Software}
-\author{Horea Christian}
+\author{Alexander Schoch}
 \institute{SSC TheAlternative | ETHZ and UZH}
 
 \DTLloaddb{server}{data/web_servers.csv}
@@ -340,7 +340,7 @@
 						\vspace{-0.75em}
 						\centering\tiny
 							\DTLpiechart{radius=0.235\textheight,variable=\quantity,innerlabel={\DTLpiepercent\%},outerlabel=\name,cutaway={1-2}}{server}{\name=Name,\quantity=percent}
-							\caption{Web Server Market Share 2020-02-26 via \href{http://w3techs.com/technologies/overview/web_server/all}{w3techs}}
+							\caption{Web Server Market Share 2020-10-06 via \href{http://w3techs.com/technologies/overview/web_server/all}{w3techs}}
 						\end{figure}
 					\column{0.5\linewidth}
 						\begin{figure}[htbp]
@@ -349,7 +349,7 @@
 	\DTLsetpiesegmentcolor{1}{green!40}
 	\DTLsetpiesegmentcolor{2}{red!40}
 							\DTLpiechart{radius=0.265\textheight,variable=\quantity,innerlabel={\DTLpiepercent\%},outerlabel=\name,cutaway={2}}{os}{\name=Name,\quantity=percent}
-							\caption{Website OS Market Share 2020-02-26 via \href{http://w3techs.com/technologies/overview/operating_system/all}{w3techs}}
+							\caption{Website OS Market Share 2020-10-06 via \href{http://w3techs.com/technologies/overview/operating_system/all}{w3techs}}
 						\end{figure}
 				\end{columns}
 			\end{frame}
@@ -436,7 +436,7 @@
 					\item Come to the next “Linux Days” events:
 					\textcolor{lg}{\url{http://thealternative.ch/}}
 					\item Join the next “Stammtisch”:\\
-					\textcolor{lg}{18:00 Thursday, March 5 - Katholische Hochschulgemeinde Zürich AKI, 2nd floor, Hirschengraben 86, 8001}
+					\textcolor{lg}{This will not take place due to the coronavirus}
 					\item Give us feedback!\\
 					\textcolor{lg}{\url{https://feedback.thealternative.ch/}}
 				\end{itemize}
@@ -448,7 +448,7 @@
 				\end{itemize}
 				%separate sources from info so it looks nicer
 				\begin{itemize}
-					\item \textcolor{lg}{License:} \href{https://creativecommons.org/licenses/by-sa/3.0/}{CC BY-SA 4.0}
+					\item \textcolor{lg}{License:} \href{https://creativecommons.org/licenses/by-sa/3.0/}{Slides by Alexander Schoch/Christian Horea, CC BY-SA 4.0}
 				\end{itemize}
 			\end{frame}
 			\begin{frame}{References}