def setInitialUrl(self):
"""Set the url to go to when the dialog is loaded.
Clear the cookies before setting the initial url.This is because once a
user completes the sign-in flow, a cookie is stored within QWebview and
are not cleared until the plugin is reloaded. Clearing the cookies before
showing the sign-in box.
"""
manager = self.webView.page().networkAccessManager()
cookieJar = QNetworkCookieJar()
manager.setCookieJar(cookieJar)
qurl = QUrl()
qurl.setEncodedUrl(oauth2_utils.buildAuthenticationUri())
self.webView.setUrl(qurl)
