Wip chunked decoding

+ Need to test normal body parsing
+ path_is_valid() renamed eval_file_type()
+ replaced atoi with strtol/strtoul

srcs/config/postProcessing.cpp

@@ -57,7 +57,7 @@ void	ConfigParser::_post_processing(std::vector<ServerConfig> *servers)
 
 	// nothing to be done for cgi_ext, error_pages, redirect
 
-//			if (path_is_valid(it_l->root) == IS_DIR
+//			if (eval_file_type(it_l->root) == IS_DIR
 //				&& it_l->path[it_l->path.size() - 1] != '/')
 //				it_l->path.push_back('/');
 			if (it_l->path[it_l->path.size() - 1] == '/'