Moves the current query down one entry.

def moveDown(self, entry):
        """
        Moves the current query down one entry.
        """
        if not entry:
            return
        
        entries = self.entries()
        next = entries[entries.index(entry) + 1]
        
        entry_q = entry.query()
        next_q  = next.query()
        
        next.setQuery(entry_q)
        entry.setQuery(next_q)