[ADD] Create module Mail Sent and added changes that displayed Sent menu item

mail_sent/README.rst

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+Mail Sent
+=========
+
+Adds Sent menu, which shows sent messages
+
+Usage
+-----
+Click Discuss/Sent menu -- sent messages are displayed
+
+Further information
+-------------------
+
+HTML Description: https://apps.odoo.com/apps/modules/9.0/mail_sent/
+
+Tested on Odoo 9.0 b9f206953e3f877adf18643f154d1262842564ee

mail_sent/__init__.py

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+# -*- coding: utf-8 -*-
+
+from . import models

mail_sent/__openerp__.py

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+# -*- coding: utf-8 -*-
+{
+    "name": "Mail Sent",
+    "summary": """Create sent channel""",
+    "category": "Discuss",
+    "images": [],
+    "version": "1.0.0",
+
+    "author": "IT-Projects LLC, Pavel Romanchenko",
+    "website": "https://it-projects.info",
+    "license": "LGPL-3",
+
+    "depends": [
+        "base",
+        "mail",
+        "mail_base"
+    ],
+
+    "data": [
+        "views/templates.xml",
+    ],
+    "qweb": [
+        "static/src/xml/menu.xml",
+    ],
+    'installable': True,
+}

mail_sent/models/__init__.py

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+# -*- coding: utf-8 -*-

mail_sent/static/src/js/sent.js

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+odoo.define('mail_archives.archives', function (require) {
+"use strict";
+
+var base_obj = require('mail_base.base');
+
+//-------------------------------------------------------------------------------
+var bus = require('bus.bus').bus;
+var config = require('web.config');
+var core = require('web.core');
+var data = require('web.data');
+var Model = require('web.Model');
+var session = require('web.session');
+var time = require('web.time');
+var web_client = require('web.web_client');
+
+var _t = core._t;
+//-------------------------------------------------------------------------------
+
+// Inherit class and override methods
+base_obj.MailTools.include({
+    get_properties: function(msg){
+        var properties = this._super.apply(this, arguments);
+        properties.is_archive = this.property_descr("channel_archive", msg, this);
+        return properties;
+    },
+
+    set_channel_flags: function(data, msg){
+        this._super.apply(this, arguments);
+        msg.is_archive = true;
+        return msg;
+    },
+
+    get_channel_array: function(msg){
+        var arr = this._super.apply(this, arguments);
+        return arr.concat('channel_archive');
+    },
+
+    get_domain: function(channel){
+        return (channel.id === "channel_archive") ? [] : this._super.apply(this, arguments);
+    }
+});
+
+base_obj.chat_manager.is_ready.then(function(){
+        // Add archive channel
+        base_obj.chat_manager.mail_tools.add_channel({
+            id: "channel_archive",
+            name: _t("Archive"),
+            type: "static"
+        });
+
+        return $.when();
+    });
+
+return base_obj.chat_manager;
+
+});

mail_sent/static/src/xml/menu.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<template>
+    <!--Inherit Sidebar and add Sent menu item after Starred -->
+    <t t-extend="mail.chat.Sidebar">
+        <t t-jquery="div[data-channel-id=channel_starred]" t-operation="after">
+            <div t-attf-class="o_mail_chat_channel_item #{(active_channel_id == 'channel_sent') ? 'o_active': ''}" data-channel-id="channel_sent">
+                <span class="o_channel_name"> <i class="fa fa-send"/> Sent </span>
+            </div>
+        </t>
+    </t>
+    <!--Add message about empty sent page-->
+    <t t-extend="mail.EmptyChannel">
+        <t t-jquery="t:last-child" t-operation="after">
+            <t t-if="options.channel_id==='channel_sent'">
+                <div class="o_thread_title">No sent messages</div>
+                <div>You can send messages and then these messages will appear here.</div>
+            </t>
+        </t>
+    </t>
+</template>

mail_sent/views/templates.xml

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+<?xml version="1.0"?>
+<openerp>
+    <data>
+        <template id="mail_sent_assets_backend"
+                  name="mail_sent_assets_backend"
+                  inherit_id="web.assets_backend">
+            <xpath expr="." position="inside">
+                <script src="/mail_sent/static/src/js/sent.js" type="text/javascript"></script>
+            </xpath>
+        </template>
+    </data>
+</openerp>