icon improved
refectored menu operations
shift operation for multiple selection
cleanup of modelif package
refactored modelif package - moved all operations to one package
unified JavaUtils into one class
unified names of factory classes
refactored shift operation
renamed factory
cosmetics
fixed shift buttons enabler
fixed category type change operation
model menu manager moved to menu package
cosmetics
cleanup
refactoring for actions usage
fixed refresh editor after undo
select added method child
added del key listener to partitions viewer
cleanup