Fix duplicate text bug on reconnect or ACK timeout

www/common/cryptpad-common.js

@@ -879,7 +879,8 @@ define([
         postMessage("LEAVE_PAD", data, cb);
     };
     pad.sendPadMsg = function (data, cb) {
-        postMessage("SEND_PAD_MSG", data, cb);
+        // -1 ==> no timeout, we may receive the callback only when we reconnect
+        postMessage("SEND_PAD_MSG", data, cb, { timeout: -1 });
     };
     pad.onReadyEvent = Util.mkEvent();
     pad.onMessageEvent = Util.mkEvent();

www/common/outer/worker-channel.js

@@ -45,10 +45,13 @@ define([
             var txid = mkTxid();
             opts = opts || {};
             var to = opts.timeout || 30000;
-            var timeout = setTimeout(function () {
+            var timeout;
+            if (to > 0) {
+                timeout = setTimeout(function () {
                     delete queries[txid];
                     cb('TIMEOUT');
                 }, to);
+            }
             acks[txid] = function (err) {
                 clearTimeout(timeout);
                 delete acks[txid];

www/common/sframe-chainpad-netflux-inner.js

@@ -59,10 +59,11 @@ define([
             logLevel: logLevel
         });
         chainpad.onMessage(function(message, cb) {
+            // -1 ==> no timeout, we may receive the callback only when we reconnect
             sframeChan.query('Q_RT_MESSAGE', message, function (err) {
                 if (!err) { evPatchSent.fire(); }
                 cb(err);
-            });
+            }, { timeout: -1 });
         });
         chainpad.onPatch(function () {
             onRemote({ realtime: chainpad });