Also added a failsafe to workaround at run time if more problems are detected in the field while updating cut-copy-paste action status
Cut: focus widget has a selection, a 'cut' slot and 'canCut' Copy: focus widget has a selection and a 'copy' slot Paste: focus widget has a 'paste' slot and can accept the clipboard item
Actions have been added to context-menu for stream list and device group list only for now.