contint: rewrite rule needs 'RewriteEngine On'

Change-Id: If83a57bb4dec5a2c8148f31ba545559c00b6546f
contint: copy/paste website conf for http

Change-Id: I0d612ea4b7d700193153757d4fa9a7c6bbf63b20
contint: support X-Forwarded-Proto for doc website

Change-Id: I3c38819afb48b9624ed884cbdefca7a082812481