Update metadata rules and individual articles (#142)

* Add conceptual topic type for framework

* Add NET WPF article topic types

* Framework winforms overview topic types

* Update metadata

* Update walkthrough-my-first-wpf-desktop-application.md

dotnet-desktop-guide/framework/wpf/advanced/alignment-margins-and-padding-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "Alignment, Margins, and Padding Overview"
 description: Learn about HorizontalAlignment, Margin, Padding, and VerticalAlignment, which control child element position in Windows Presentation Foundation applications.
+ms.topic: overview
 ms.date: "03/30/2017"
 dev_langs: 
   - "csharp"

dotnet-desktop-guide/framework/wpf/advanced/annotations-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "Annotations Overview"
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs: 
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/attached-events-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "Attached Events Overview"
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs: 
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/attached-properties-overview.md

@@ -2,6 +2,7 @@
 title: "Attached Properties Overview"
 description: Learn about attached properties in Windows Presentation Foundation, which are global properties settable on any object.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/base-elements-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "Base Elements Overview"
 ms.date: "03/30/2017"
+ms.topic: overview
 helpviewer_keywords: 
   - "base elements [WPF]"
 ms.assetid: 2c997092-72c6-4767-bc84-74267f4eee72

dotnet-desktop-guide/framework/wpf/advanced/commanding-overview.md

@@ -2,6 +2,7 @@
 title: "Commanding Overview"
 description: Learn about commanding, an input mechanism in Windows Presentation Foundation which provides input handling at a more semantic level than device input.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs: 
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/custom-dependency-properties.md

@@ -2,6 +2,7 @@
 title: "Custom Dependency Properties"
 description: Learn about steps to implement a property in Windows Presentation Foundation, and options to improve performance, usability, or versatility of the property.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/dependency-properties-overview.md

@@ -2,6 +2,7 @@
 title: "Dependency properties overview"
 description: A property that is backed by the WPF property system is known as a dependency property. This overview describes the WPF property system and the capabilities of a dependency property.
 ms.date: "06/06/2018"
+ms.topic: overview
 dev_langs: 
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/documents-in-wpf.md

@@ -1,6 +1,7 @@
 ---
 title: "Documents"
 ms.date: "03/30/2017"
+ms.topic: overview
 helpviewer_keywords: 
   - "documents [WPF], packaging"
   - "documents [WPF], text layout"

dotnet-desktop-guide/framework/wpf/advanced/drag-and-drop-overview.md

@@ -2,6 +2,7 @@
 title: "Drag and Drop Overview"
 description: Learn about drag-and-drop support in Windows Presentation Foundation applications, which lets users drag objects to a region in the user interface.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs: 
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/flow-document-overview.md

@@ -2,6 +2,7 @@
 title: "Flow Document Overview"
 description: Learn about flow documents in Windows Presentation Foundation, which dynamically adjust content based on window size, device resolution, and user preferences.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/focus-overview.md

@@ -2,6 +2,7 @@
 title: "Focus Overview"
 description: "Learn about the two main concepts in Windows Presentation Foundation that pertain to focus: keyboard focus and logical focus."
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs: 
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/freezable-objects-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "Freezable Objects Overview"
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/input-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "Input Overview"
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/layout.md

@@ -2,6 +2,7 @@
 title: "Layout"
 description: Understand how and when layout calculations occur in the Windows Presentation Foundation layout system.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/routed-events-overview.md

@@ -2,6 +2,7 @@
 title: "Routed Events Overview"
 description: Learn about routed events in Windows Presentation Foundation, including how they are routed through an element tree and how to create custom routed events.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/textelement-content-model-overview.md

@@ -1,6 +1,7 @@
 ---
 title: "TextElement Content Model Overview"
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs: 
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/threading-model.md

@@ -2,6 +2,7 @@
 title: "Threading Model"
 description: Learn about situations where you might need multiple threads in your Windows Presentation Foundation application. Single threaded solutions are preferred.
 ms.date: "03/30/2017"
+ms.topic: overview
 dev_langs:
   - "csharp"
   - "vb"

dotnet-desktop-guide/framework/wpf/advanced/trees-in-wpf.md

@@ -1,6 +1,7 @@
 ---
 title: "Trees"
 ms.date: "03/30/2017"
+ms.topic: overview
 helpviewer_keywords: 
   - "logical tree [WPF]"
   - "element tree [WPF]"

dotnet-desktop-guide/framework/wpf/advanced/wpf-architecture.md

@@ -2,6 +2,7 @@
 title: Architecture
 description: Learn about the Windows Presentation Foundation class hierarchy, including most of the major subsystems and how they interact.
 ms.date: "03/30/2017"
+ms.topic: overview
 helpviewer_keywords: 
   - "properties [WPF], attached"
   - "attached properties [WPF]"

dotnet-desktop-guide/framework/wpf/advanced/wpf-globalization-and-localization-overview.md

@@ -2,6 +2,7 @@
 title: Globalization and localization overview
 description: Learn about localization and globalization for Windows Presentation Foundation, including automatic layout, satellite assemblies, and localized attributes.
 ms.date: "03/30/2017"
+ms.topic: overview
 helpviewer_keywords:
   - "globalization [WPF], about globalization"
   - "localization [WPF], about localization"

dotnet-desktop-guide/framework/wpf/advanced/xaml-syntax-in-detail.md

@@ -2,6 +2,7 @@
 title: "XAML Syntax In Detail"
 description: Learn about terms that are used to describe the elements of XAML syntax for Windows Presentation Foundation and other frameworks that use XAML.
 ms.date: "03/30/2017"
+ms.topic: overview
 helpviewer_keywords: 
   - "XML [WPF], namespaces"
   - "XAML [WPF], parsing of attributes"