'Get the rendered preview of the contents of the Discussions new post editor
Waits for content to appear, as the preview is triggered on debounced/delayed onchange'

def get_new_post_preview_text(self):

    self.wait_for_element_visibility('.wmd-preview    >    div', 'WMD    preview    pane    has    contents', timeout=10)
    return self.q(css='.wmd-preview').text[0]
