Save message timestamp for resending

Fix bug where resending due to failed network connection would fail
silently.

Broken in 7b6820 refactor which changed arguments to transmitMessage

// FREEBIE

js/libtextsecure.js

@@ -74,10 +74,10 @@
     OutgoingMessageError.prototype = new ReplayableError();
     OutgoingMessageError.prototype.constructor = OutgoingMessageError;
 
-    function SendMessageNetworkError(number, jsonData, httpError) {
+    function SendMessageNetworkError(number, jsonData, httpError, timestamp) {
         ReplayableError.call(this, {
             functionCode : Type.TRANSMIT_MESSAGE,
-            args         : [number, jsonData]
+            args         : [number, jsonData, timestamp]
         });
         this.name = 'SendMessageNetworkError';
         this.number = number;
@@ -37249,7 +37249,7 @@ OutgoingMessage.prototype = {
             if (e.name === 'HTTPError' && (e.code !== 409 && e.code !== 410)) {
                 // 409 and 410 should bubble and be handled by doSendMessage
                 // all other network errors can be retried later.
-                throw new textsecure.SendMessageNetworkError(number, jsonData, e);
+                throw new textsecure.SendMessageNetworkError(number, jsonData, e, timestamp);
             }
             throw e;
         });

libtextsecure/errors.js

@@ -73,10 +73,10 @@
     OutgoingMessageError.prototype = new ReplayableError();
     OutgoingMessageError.prototype.constructor = OutgoingMessageError;
 
-    function SendMessageNetworkError(number, jsonData, httpError) {
+    function SendMessageNetworkError(number, jsonData, httpError, timestamp) {
         ReplayableError.call(this, {
             functionCode : Type.TRANSMIT_MESSAGE,
-            args         : [number, jsonData]
+            args         : [number, jsonData, timestamp]
         });
         this.name = 'SendMessageNetworkError';
         this.number = number;

libtextsecure/outgoing_message.js

@@ -91,7 +91,7 @@ OutgoingMessage.prototype = {
             if (e.name === 'HTTPError' && (e.code !== 409 && e.code !== 410)) {
                 // 409 and 410 should bubble and be handled by doSendMessage
                 // all other network errors can be retried later.
-                throw new textsecure.SendMessageNetworkError(number, jsonData, e);
+                throw new textsecure.SendMessageNetworkError(number, jsonData, e, timestamp);
             }
             throw e;
         });