Added a simple meta file to the projects; Added some parameters to the shell scripts (#642); Some code modifications for quality reasons

Updated some license-files; Started with the modifications for the FlowEditor based on the work of row;

Started with an improved version of the GUI, including a multi user mode; Updated also the Kieker-jar.

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.

Added comments; Imported the clean-up and formatter from Kieker; Modified the structure of a project.