[FIX] mail: update dm chat ok for f2302dfb

In f2302df dm type of channel was renamed to dm_chat, this commit takes
this into account in other part of the code.

addons/mail/static/src/js/services/mail_manager.js

@@ -445,7 +445,7 @@ var MailManager =  AbstractService.extend({
         var channel = this.getChannel(data.id);
         if (!channel) {
             channel = this._makeChannel(data, options);
-            if (channel.getType() === 'dm') {
+            if (channel.getType() === 'dm_chat') {
                 this._pinnedDmPartners.push(channel.getDirectPartnerID());
                 this.call('bus_service', 'updateOption',
                     'bus_presence_partner_ids',
@@ -1048,7 +1048,7 @@ var MailManager =  AbstractService.extend({
                     userIDs[0] !== session.uid &&
                     dmRedirection
                 ) {
-                    self.createChannel(resID, 'dm').then(dmRedirection);
+                    self.createChannel(resID, 'dm_chat').then(dmRedirection);
                 } else {
                     self._redirectToDocument(resModel, resID);
                 }
@@ -1064,7 +1064,7 @@ var MailManager =  AbstractService.extend({
      */
     _removeChannel: function (channel) {
         if (!channel) { return; }
-        if (channel.getType() === 'dm') {
+        if (channel.getType() === 'dm_chat') {
             var index = this._pinnedDmPartners.indexOf(channel.getDirectPartnerID());
             if (index > -1) {
                 this._pinnedDmPartners.splice(index, 1);

addons/mail/static/src/js/services/mail_window_manager.js

@@ -418,7 +418,7 @@ MailManager.include({
         var blankThreadWindow = this._getBlankThreadWindow();
         if (
             blankThreadWindow &&
-            thread.getType() === 'dm' &&
+            thread.getType() === 'dm_chat' &&
             thread.getDirectPartnerID() === blankThreadWindow.directPartnerID
         ) {
             // the window takes the place of the 'blank' thread window

addons/mail/static/src/js/tour.js

@@ -24,7 +24,7 @@ tour.register('mail_tour', [{
     content: _t("Once a message has been starred, you can come back and review it at any time here."),
     position: "bottom",
 }, {
-    trigger: '.o_mail_discuss .o_mail_discuss_sidebar .o_add[data-type="dm"]',
+    trigger: '.o_mail_discuss .o_mail_discuss_sidebar .o_add[data-type="dm_chat"]',
     content: _t("<p><b>Chat with coworkers</b> in real-time using direct messages.</p><p><i>You might need to invite users from the Settings app first.</i></p>"),
     position: 'bottom',
 }]);