Broken wait_for_condition (some conditions need the switch_to api) - #93

  File "/app/tests/test_func/test_ui.py", line 580, in test_foobar
    browser.wait_for_condition(expected_conditions.alert_is_present())
  File "/usr/local/lib/python2.7/dist-packages/pytest_splinter/plugin.py", line 50, in _wait_for_condition
    lambda browser: condition()
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/support/wait.py", line 71, in until
    value = method(self._driver)
  File "/usr/local/lib/python2.7/dist-packages/pytest_splinter/plugin.py", line 50, in <lambda>
    lambda browser: condition()
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/support/expected_conditions.py", line 338, in __call__
    alert = driver.switch_to.alert
AttributeError: 'WebDriver' object has no attribute 'switch_to'