Replaced the containers with a suitable decorator pattern.

.gitignore

...ain/java/kieker/webgui/domain/ComponentListContainer.java

...I/src/main/java/kieker/webgui/domain/PluginContainer.java

...c/main/java/kieker/webgui/domain/RepositoryContainer.java

.../pluginDecorators/AbstractAnalysisComponentDecorator.java

...bgui/domain/pluginDecorators/AbstractPluginDecorator.java

...ieker/webgui/domain/pluginDecorators/FilterDecorator.java

...ieker/webgui/domain/pluginDecorators/ReaderDecorator.java

...r/webgui/domain/pluginDecorators/RepositoryDecorator.java

.../src/main/java/kieker/webgui/persistence/IProjectDAO.java

...GUI/src/main/java/kieker/webgui/persistence/IUserDAO.java

...java/kieker/webgui/persistence/impl/DerbyUserDAOImpl.java

...java/kieker/webgui/persistence/impl/FSProjectDAOImpl.java

...i/persistence/impl/util/Class2ModelInstanceConverter.java

...ava/kieker/webgui/persistence/impl/util/PluginFinder.java

.../main/java/kieker/webgui/service/IGraphLayoutService.java

.../src/main/java/kieker/webgui/service/IProjectService.java

...GUI/src/main/java/kieker/webgui/service/IUserService.java

...va/kieker/webgui/service/impl/GraphLayoutServiceImpl.java

...n/java/kieker/webgui/service/impl/ProjectServiceImpl.java