Feature/azaytsev/layout updates (#2985)

* Reconfigured the layouts with importing the dedicated POT layout and Accuracy Checker and Model Downloader items from the OMZ layout

* updated

* test

* test

* Moved the Model Downloader from ie_docs.xml to openvino_docs.xml

* Renamed optimization_docs.xml --> pot_docs.xml

* Added Model Server to the layout

* Minor fixes

docs/doxygen/ie_docs.xml

@@ -56,7 +56,7 @@
                 <tab type="user" title="Known Issues" url="@ref openvino_docs_MO_DG_Known_Issues_Limitations"/>
             </tab>
             <!-- Model Downloader -->
-            <tab type="user" title="Model Downloader" url="@ref omz_tools_downloader_README"/>
+            <tab id="model_downloader" type="user" title="Model Downloader" url="@ref omz_tools_downloader_README"/>
             <!-- Custom Layers Guide -->
             <tab type="usergroup" title="Custom Layers Guide" url="@ref openvino_docs_HOWTO_Custom_Layers_Guide"></tab>
         </tab>    

docs/doxygen/openvino_docs.xml

@@ -67,8 +67,25 @@
             <xi:include href="ie_docs.xml" xpointer="xpointer(//tab[@id='deploying_inference'])"/>
             <!-- Workbench -->
             <xi:include href="workbench_docs.xml" xpointer="xpointer(//tab[@id='deep_learning_workbench'])"/>
-            <!-- Optimization docs -->
-            <xi:include href="optimization_docs.xml" xpointer="xpointer(//tab[@id='tuning_for_performance'])"/>
+            <!-- Tuning for Performance -->
+            <tab type="usergroup" title="Tuning for Performance">
+                <!-- Performance Benchmarks -->
+                <tab type="usergroup" title="Performance Measures" url="@ref openvino_docs_performance_benchmarks">
+                    <tab type="user" title="Performance Information Frequently Asked Questions" url="@ref openvino_docs_performance_benchmarks_faq"/>
+                    <tab type="user" title="Download Performance Data Spreadsheet in MS Excel* Format" url="https://docs.openvinotoolkit.org/downloads/benchmark_files/OV-2021.1-Download-Excel.xlsx"/>
+                    <tab type="user" title="INT8 vs. FP32 Comparison on Select Networks and Platforms" url="@ref openvino_docs_performance_int8_vs_fp32"/>
+                </tab>
+                <tab type="user" title="Performance Optimization Guide" url="@ref openvino_docs_optimization_guide_dldt_optimization_guide"/>
+                <!-- POT DevGuide -->
+                <xi:include href="pot_docs.xml" xpointer="xpointer(//tab[@id='pot'])"/>
+                <!-- Tuning Utilities -->
+                <tab type="usergroup" title="Tuning Utilities" url="">
+                    <xi:include href="omz_docs.xml" xpointer="xpointer(//tab[@id='accuracy_checker'])"/>
+                    <tab type="user" title="Using Cross Check Tool for Per-Layer Comparison Between Plugins" url="@ref openvino_inference_engine_tools_cross_check_tool_README"/>
+                </tab>
+                <tab type="user" title="Case Studies" url="https://www.intel.com/openvino-success-stories"/>
+            </tab>
+                        
             <tab type="usergroup" title="Media Processing">
                 <!-- DL Streamer -->
                 <tab type="user" title="DL Streamer API Reference" url="https://openvinotoolkit.github.io/dlstreamer_gst/"/>
@@ -128,6 +145,9 @@
                 <tab type="user" title="Draw Face Attributes Python Sample" url="@ref gst_samples_python_draw_face_attributes_README"/>
                 <tab type="user" title="Benchmark Sample" url="@ref gst_samples_benchmark_README"/>
             </tab>
+            <tab type="usergroup" title="Add-Ons" url="">
+              <tab type="user" title="Model Server" url="@ref openvino_docs_ovms"/>  
+            </tab>
         </tab>
 
         <!-- Chinese docs -->

docs/model_server/README.md

@@ -26,7 +26,7 @@ A few key features:
 - [Model reshaping](https://github.com/openvinotoolkit/model_server/blob/main/docs/docker_container.md#model-reshaping). The server supports reshaping models in runtime. 
 - [Model ensemble](https://github.com/openvinotoolkit/model_server/blob/main/docs/ensemble_scheduler.md) (preview). Connect multiple models to deploy complex processing solutions and reduce overhead of sending data back and forth.
 
-> **NOTE**: OVMS has been tested on CentOS\* and Ubuntu\*. Publically released [Docker images](https://hub.docker.com/r/openvino/model_server) are based on CentOS.
+> **NOTE**: OVMS has been tested on CentOS\* and Ubuntu\*. Publicly released [Docker images](https://hub.docker.com/r/openvino/model_server) are based on CentOS.
 
 ## Build OpenVINO Model Server
 
@@ -50,7 +50,7 @@ For debugging, the command also generates an image with a suffix `-build`, namel
 
 ## Run OpenVINO Model Server
 
-Find a detailed description of how to use the OpenVINO Model Server in the [OVMS Quickstart](https://github.com/openvinotoolkit/model_server/blob/main/docs/ovms_quickstart.md).
+Find a detailed description of how to use the OpenVINO Model Server in the [OVMS Quick Start Guide](https://github.com/openvinotoolkit/model_server/blob/main/docs/ovms_quickstart.md).
 
 
 For more detailed guides on using the Model Server in various scenarios, visit the links below: