Connect the signals with the slots to make the ui functional

        :returns: None
        :rtype: None
        :raises: None

def setup_signals(self, ):
        """Connect the signals with the slots to make the ui functional

        :returns: None
        :rtype: None
        :raises: None
        """
        self.showfilter_tb.toggled.connect(self.switch_showfilter_icon)
        self.addnew_tb.clicked.connect(self.open_addnew_win)
        self.search_le.editingFinished.connect(self.update_filter)
        for cb in (self.loaded_checkb, self.unloaded_checkb, self.imported_checkb, self.empty_checkb,
                   self.newest_checkb, self.old_checkb, self.alien_checkb):
            cb.toggled.connect(self.update_filter)