Add and send certificates of representation to tell people what our valid upstreams are. These are not used yet but will be needed for future privacy modes, etc. Also some cleanup.

node/Revocation.hpp

@@ -152,6 +152,8 @@ public:
 				memcpy(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN);
 				p += ZT_C25519_SIGNATURE_LEN;
 			} else throw std::runtime_error("invalid signature");
+		} else {
+			p += 2 + b.template at<uint16_t>(p);
 		}
 
 		p += 2 + b.template at<uint16_t>(p);