basic image support

data/projects.xml

...java/be/uantwerpen/datamining/images/ImageClustering.java

...a/be/uantwerpen/datamining/images/ImageClusteringDTW.java

...main/java/be/uantwerpen/datamining/images/ImageStore.java

...be/uantwerpen/mime_webapp/controller/ImageController.java

...erpen/mime_webapp/controller/PatternMiningController.java

...antwerpen/mime_webapp/controller/TransformController.java

src/main/java/be/uantwerpen/mime_webapp/model/FileItem.java

...n/java/be/uantwerpen/mime_webapp/model/ImageFileItem.java