docs(migration): Create "Migrating" section and move content from Guides (#1948)

* docs(migrate) Create section. Move content

* docs(migrate) Move redirect to plugin from config

Author: EugeneHlushko

antwar.config.js

@@ -85,6 +85,12 @@ module.exports = () => ({
 			layout: () => require('./src/components/Page/Page.jsx').default,
 			content: () => require.context('./loaders/page-loader!./src/content/contribute', false, /^\.\/.*\.md$/),
 		},
+		migrate: {
+			title: 'Migrate',
+			url: ({ sectionName, fileName }) => `/${sectionName}/${fileName}/`,
+			layout: () => require('./src/components/Page/Page.jsx').default,
+			content: () => require.context('./loaders/page-loader!./src/content/migrate', false, /^\.\/.*\.md$/),
+		},
 		vote: () => require('./src/components/Vote/Vote.jsx').default,
 		organization: () => require('./src/components/Organization/Organization.jsx').default,
 		'starter-kits': () => require('./src/components/StarterKits/StarterKits.jsx').default,

src/components/Navigation/Links.json

@@ -8,7 +8,8 @@
       { "title": "API", "url": "api" },
       { "title": "Guides", "url": "guides" },
       { "title": "Loaders", "url": "loaders" },
-      { "title": "Plugins", "url": "plugins" }
+      { "title": "Plugins", "url": "plugins" },
+      { "title": "Migrate", "url": "migrate" }
     ]
   },
   {

src/content/guides/migrating.md src/content/migrate/3.md

@@ -1,6 +1,6 @@
 ---
-title: Migrating Versions
-sort: 15
+title: To webpack v2, v3
+sort: 1
 contributors:
   - sokra
   - jhnns
@@ -14,14 +14,13 @@ contributors:
   - howdy39
   - selbekk
   - ndelangen
+  - EugeneHlushko
 ---
 
 The following sections describe the major changes from webpack 1 to 2.
 
 T> Note that there were far fewer changes between 2 and 3, so that migration shouldn't be too bad. If you are running into issues, please see [the changelog](https://github.com/webpack/webpack/releases) for details.
 
-W> This content may be moved to the blog post in the near future as version 2 has been out for a while. On top of that, version 3 was recently released and version 4 is on the horizon. As noted above, folks should instead to refer to [the changelog](https://github.com/webpack/webpack/releases) for migrations.
-
 
 ## `resolve.root`, `resolve.fallback`, `resolve.modulesDirectories`
 

src/content/migrate/index.md

@@ -0,0 +1,8 @@
+---
+title: Migrate
+sort: 1
+contributors:
+  - EugeneHlushko
+---
+
+This section contains information about migrating from older versions of webpack to newer ones.

webpack.config.js

@@ -119,6 +119,7 @@ module.exports = (env) => ({
         'development/release-process': '/contribute/release-process/',
         'development/how-to-write-a-loader': '/contribute/writing-a-loader/',
         'development/how-to-write-a-plugin': '/contribute/writing-a-plugin/',
+				'migrating': '/migrate/3/',
       },
     }),
   ]