Issue #2134145 by joelcollinsdc, roshan_shetty, cherrypj: add REST API option in prepartion for Akamai sunsetting SOAP

fixed some db operations and commented out functions for hook implementation of context_http_headers which is not D7 yet

First crack at a D7 upgrade. Wanted to just get this into CVS. Needs more work to get all the tests working correctly and a full scrub for good measure.

added an alter hook to add/modify paths to clear in addition to what is geing sent, also removed the leading / on the original URL to normalize it. Much of this thanks to emackn