Solved minor problems and made sure that the user can select libraries for projects; Updated the Kieker-Jar

Added the new kieker-jar and modified the code to suit this new jar; Advanced the ClassLoader; Modified code within the xhtml-files; Started with the dependency-choosing for a single project.

Added an overview diagram; Added configuration files for findbugs, checkstyle and pmd; Added maven-plugins to support these quality-tools; Moved some code; Modified some code for checkstyle; Added the kieker-header within the files.