Setup shell context menu

def setup_context_menu(self):
        """Setup shell context menu"""
        self.menu = QMenu(self)
        self.cut_action = create_action(self, _("Cut"),
                                        shortcut=keybinding('Cut'),
                                        icon=ima.icon('editcut'),
                                        triggered=self.cut)
        self.copy_action = create_action(self, _("Copy"),
                                         shortcut=keybinding('Copy'),
                                         icon=ima.icon('editcopy'),
                                         triggered=self.copy)
        paste_action = create_action(self, _("Paste"),
                                     shortcut=keybinding('Paste'),
                                     icon=ima.icon('editpaste'),
                                     triggered=self.paste)
        save_action = create_action(self, _("Save history log..."),
                                    icon=ima.icon('filesave'),
                                    tip=_("Save current history log (i.e. all "
                                          "inputs and outputs) in a text file"),
                                    triggered=self.save_historylog)
        self.delete_action = create_action(self, _("Delete"),
                                    shortcut=keybinding('Delete'),
                                    icon=ima.icon('editdelete'),
                                    triggered=self.delete)
        selectall_action = create_action(self, _("Select All"),
                                    shortcut=keybinding('SelectAll'),
                                    icon=ima.icon('selectall'),
                                    triggered=self.selectAll)
        add_actions(self.menu, (self.cut_action, self.copy_action,
                                paste_action, self.delete_action, None,
                                selectall_action, None, save_action) )