\documentclass[twoside,a4paper,titlepage]{book}
-\usepackage[british]{babel}
-\usepackage{makeidx} % Index
\usepackage{geometry} % Papersize
+\usepackage[british]{babel} % Internationalization
\usepackage[titletoc]{appendix} % Appendices
\usepackage{hyperref} % Hyperlinks
\usepackage{booktabs} % Better looking tables
-\usepackage{todonotes} % Todo's
\usepackage{caption} % Captions
\usepackage{subcaption} % Subcaptions
-\usepackage{lipsum} % dummy text
\usepackage{listings} % source code
\usepackage{float} % floating images
\usepackage{lmodern} % Better teletype fonts
\usepackage{pgf-umlsd} % Connection diagrams
\usepackage{graphicx} % Graphics
\usepackage{epstopdf} % Eps graphics
+\usepackage{todonotes} % Todo notes
\usetikzlibrary{arrows,shadows}