[request] revert changes in http requests, removed logic caused a regreession.
Merge pull request #151 from formapro-forks/revert-http-request-changes

[request] revert changes in http requests, removed logic caused a regree...
release 0.9.2
Merge branch '0.9'

Conflicts:
	src/Payum/Core/Request/PostRedirectUrlInteractiveRequest.php
	src/Payum/Core/Request/RedirectUrlInteractiveRequest.php
	src/Payum/Core/Request/ResponseInteractiveRequest.php