Revert "Move pages, remove the page content type"

This reverts commit e4a779fc45.

.gitmodules

@@ -1,4 +1,4 @@
-[submodule "source/atdc"]
-	path = source/atdc
+[submodule "source/_pages/atdc"]
+	path = source/_pages/atdc
 	url = git@github.com:opdavies/atdc-pages.git
 	branch = main

app/config/sculpin_kernel.yml

@@ -2,6 +2,8 @@
 sculpin_content_types:
   daily_emails:
     permalink: /daily/:year/:month/:day/:basename/
+  pages:
+    permalink: /:basename/
   podcast_episodes:
     permalink: /podcast/:basename/
   posts:

source/_pages/404.md

@@ -1,5 +1,4 @@
 ---
-layout: page
 title: Page not found
 ---
 

source/_pages/atdc

@@ -0,0 +1 @@
+Subproject commit f31e5c4364890b2a31b3acd961f78565ad822de9

source/_pages/atdc.md

@@ -1,5 +1,4 @@
 ---
-layout: page
 title: Introduction to Automated Testing in Drupal email course
 ---
 

source/_pages/daily.md

@@ -1,5 +1,4 @@
 ---
-layout: page
 title: Sign up for the Daily Drupaler Email List
 meta:
   title: The Daily Drupaler - Daily Software Development Thoughts and Tips | %site.name%