Revert r15255 - failure in Mantissa tests
Revert r15255 - failure in Mantissa tests

Reopens #2559

{{{
===============================================================================
[ERROR]: xmantissa.test.test_website.SiteConfigurationTests.test_rootURLNonstandardRequestPort

Traceback (most recent call last):
  File "/home/exarkun/Projects/Divmod/trunk/Mantissa/xmantissa/test/test_website.py", line 318, in test_rootURLNonstandardRequestPort
    request = FakeRequest(isSecure=isSecure, headers={
exceptions.NameError: global name isSecure is not defined
-------------------------------------------------------------------------------
}}}

twisted/quotient,twisted/quotient