add Container EClass to the model and fix errors, which occur through
the model adaptation
refactoring ORMNodeGraphicalNodeEditPolicy
merge createcommand for natrualtype, roletype and rolegroup
merge delete command of natrualtype and roletype
merge the grouping and compartment delete command with the
NodeDeleteCommand
refactoring delete/create commands of rolegroup, compartment and
grouping
rename package orm.framed.orm.ui.command.types to
orm.framed.orm.ui.command.nodes and move all node related command in
that package