Refactor directory structure, update _config.yml to match opensource.guide

This change updates the directory structure of the jekyll site, moving
the language-specific directories under `_articles` and updating the
front matter / `_config.yml` to match.

The goal was to clean up the root of the repository and bring the
config in line with that used by the opensource.guide site.

_articles/ar/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: ar
+permalink: /ar/
 ---

_articles/bg/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: bg
+permalink: /bg/
 ---

_articles/bn/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: bn
+permalink: /bn/
 ---

_articles/de/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: de
+permalink: /de/
 ---

_articles/es/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: es
+permalink: /es/
 ---

_articles/fa/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: fa
+permalink: /fa/
 ---

_articles/fr/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: fr
+permalink: /fr/
 ---

_articles/it/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: it
+permalink: /it/
 ---

_articles/ja/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: ja
+permalink: /ja/
 ---

_articles/ko/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: ko
+permalink: /ko/
 ---

_articles/pl/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: pl
+permalink: /pl/
 ---

_articles/pt/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: pt
+permalink: /pt/
 ---

_articles/ru/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: ru
+permalink: /ru/
 ---

_articles/tr/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: tr
+permalink: /tr/
 ---

_articles/uk/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: uk
+permalink: /uk/
 ---

_articles/zh/index.html

@@ -1,4 +1,5 @@
 ---
 layout: index
 lang: zh
+permalink: /zh/
 ---

_config.yml

@@ -19,11 +19,21 @@ exclude:
 
 permalink: "/:path/"
 
+collections:
+  articles:
+    output: true
+    permalink: "/:path/"
+
 defaults:
   - scope:
       path: ""
     values:
       image: /assets/images/social-graphic.jpg
+  - scope:
+      path: ""
+      type: articles
+    values:
+       layout: default
 
 plugins:
   - jekyll-redirect-from

en/businesses.html

@@ -1,4 +0,0 @@
----
-layout: businesses
-lang: en
----

maintainers.html

@@ -1,4 +0,0 @@
----
-layout: maintainers
-lang: en
----