Topical Kieker-jar uploaded; Relative paths for libs; Plugins can now we added to a project and are shown on the screen.

Added some licensed and made sure that they are packed within the archive. Made also sure that the kieker.jar will be packed as well.

Added the files for JointJS; Made sure that the available plugins will be shown; Made sure that messages can be shown

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.