Add comments about E2E test bug, mark tests as pending.
Avoid unexpected alert dialog that breaks E2E tests

The exception:
  org.openqa.selenium.UnhandledAlertException: unexpected alert open
Remove Base36 tests, since I've removed the base 36 code anyway.
Add variations of site creation: blog, forum, website, gmail, password

I haven't implemented the blog/forum/website part, only gmail/password.

Also: Pass login method to clickWelcomeLoginToDashboard() and
clickCreateSite() so they work with other methods than Gmail only.
Minor E2E test refactoring: Move and rename login methods.