Similar to hover_and_click(), but assumes top element is already found.

def hover_element_and_click(driver, element, click_selector,
                            click_by=By.CSS_SELECTOR,
                            timeout=settings.SMALL_TIMEOUT):
    """
    Similar to hover_and_click(), but assumes top element is already found.
    """
    start_ms = time.time() * 1000.0
    stop_ms = start_ms + (timeout * 1000.0)
    hover = ActionChains(driver).move_to_element(element)
    hover.perform()
    for x in range(int(timeout * 10)):
        try:
            element = driver.find_element(by=click_by, value=click_selector)
            element.click()
            return element
        except Exception:
            now_ms = time.time() * 1000.0
            if now_ms >= stop_ms:
                break
            time.sleep(0.1)
    raise NoSuchElementException(
        "Element {%s} was not present after %s seconds!" %
        (click_selector, timeout))