_request() and _response() refactoring

+ Wip redirection (weird behavior)
+ 505 HTTP Version Not Supported

memo.txt

@@ -1,11 +1,10 @@
 IN 42 SUBJECT, PRIORITY :
 - chunked request (response not mandatory it seems)
-- 505 HTTP Version Not Supported
 - CGI
 - index (default file directory)
 - Ecrire des tests !
 
-- handle redirection
+- handle redirection (weird behavior, to fix)
 - upload files with config "upload_repo"
 -----------------------------
 - autoindex (done, need test)