Added connection and request parameters to extractObject, and checked if it had sent a response before continuing (PLAT-673)
HttpClient: added a function to perform a DELETE request
Added a testcase for the HttpClient del function
Moved the macro before the function definition
Add ExtractObject usage comment (PLAT-673)
Merge pull request #131 from datacratic/PLAT-673-allow-path-validation-with-extractObject

Added connection and request parameters to extractObject (PLAT-673).
fs_utils: return empty FsObjectInfo for missing local files
Merge pull request #132 from datacratic/http_client_delete

HttpClient: added a function to perform a DELETE request
Merge branch 'master' into http-client-ih

Conflicts:
	service/http_client.h
	service/testing/http_client_test.cc