conversation_request cleanup

pb/messages.proto

@@ -35,10 +35,10 @@ message Invitation {
 
 // structure for requesting incoming messages
 message ConversationRequest {  
-    string lookupKey = 1; // lookup key for a conversation
-    string lastServerUuidOK = 2; // Last Server message UUID received (send me all after that one)
-    int64 sendTimestamp = 3;
-    string lookupSignature = 4; // prove that I own the private key by signing that block
+    string lookup_key = 1; // lookup key for a conversation
+    // removed string lastServerUuidOK = 2;  //  Last Server message UUID received (send me all after that one)
+    int64 send_timestamp = 2;
+    string lookup_signature = 3; // prove that I own the private key by signing that block
 } 
 
 message Meet {