Base Tag Not Present
--------------------

PLIP #13705 removed the <base> tag from rendered templates, here we'll check
that in fact is not being injected in some other way.

  >>> from plone.testing.z2 import Browser
  >>> from plone.app.testing import TEST_USER_NAME
  >>> from plone.app.testing import TEST_USER_PASSWORD
  >>> browser = Browser(app)
  
  >>> browser.open('http://nohost/plone/login')
  >>> browser.getControl('Login Name').value = TEST_USER_NAME
  >>> browser.getControl('Password').value = TEST_USER_PASSWORD
  >>> browser.getControl('Log in').click()
  
Check object view

  >>> browser.open('http://nohost/plone/front-page')
  >>> '<base' in browser.contents
  False
  
Check edit view

  >>> browser.open('http://nohost/plone/front-page/edit')
  >>> '<base' in browser.contents
  False

Check folder_contents view

  >>> browser.open('http://nohost/plone/folder_contents')
  >>> '<base' in browser.contents
  False
