Some minor changes
Added method to delete/purge group
Project structure and so packages are changed (gwt-widget like structure)
Product creation methods improved
Added method to get the group list
Added methods to manage groups
Added method to patch product/resource
Added support for datasets's relationships (create, delete,
retrieve methods)
Added Factory in order to reduce the number of created
instances of the utils class(cache)
Added code to discover a new Application Profile (see ticket #4925)
Added methods to manage group creation, assing a user/product to a group
First Release