Add client session-id to API requests
Improve CaptureRequestIdMiddleware description.
Remove concern about other api calls in spec description.
Remove 'should' from spec description
Refactor capture_request_id_middleware
Refactor active_resource_extension_spec
Replace Fakeweb by Webmock
Tear down tests that modify the value of Thread.current
Create class CurrentRequestId
Replace Thread.current calls by CurrentRequestId object.
Move middleware configuration to environments.
Merge branch 'master' into passing-request-id-to-api-calls

Conflicts:
	Gemfile.lock
	spec/spec_helper.rb
Revert "Move middleware configuration to environments."

This reverts commit a6a74aea34a9c5b41a5a99f76d36e0dcf5a93f30.
Merge branch 'master' into passing-request-id-to-api-calls

Conflicts:
	Gemfile.lock
Merge pull request #22 from moneyadviceservice/passing-request-id-to-api-calls

Add client request-id to API requests