diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 4b6aae2c..00000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "bl-themes/clean-blog"]
-	path = bl-themes/clean-blog
-	url = git@github.com:bludit-themes/clean-blog.git
diff --git a/bl-kernel/boot/variables.php b/bl-kernel/boot/variables.php
index 3876ca03..a5412366 100644
--- a/bl-kernel/boot/variables.php
+++ b/bl-kernel/boot/variables.php
@@ -57,7 +57,7 @@ define('REMEMBER_COOKIE_TOKEN', 'BLUDITREMEMBERTOKEN');
 define('REMEMBER_COOKIE_EXPIRE_IN_DAYS', 30);
 
 // Filename
-define('FILENAME', 'index.txt');
+define('FILENAME', 'index.md');
 
 // Database date format
 define('DB_DATE_FORMAT', 'Y-m-d H:i:s');
diff --git a/bl-kernel/page.class.php b/bl-kernel/page.class.php
index a3613e11..1880eabb 100644
--- a/bl-kernel/page.class.php
+++ b/bl-kernel/page.class.php
@@ -440,7 +440,17 @@ class Page {
 
 		return $tmp;
 	}
+	public function subpages()
+	{
+		return $this->children();
+	}
 
+	// Returns TRUE if the page has subpages/children, FALSE otherwise
+	public function hasSubpages()
+	{
+		$subpages = $this->subpages();
+		return !empty($subpages);
+	}
 
 
 	// Returns relative time (e.g. "1 minute ago")
diff --git a/bl-themes/clean-blog b/bl-themes/clean-blog
deleted file mode 160000
index 1620e2f4..00000000
--- a/bl-themes/clean-blog
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 1620e2f4640cf1dfcd04e2018e6e17b81d7b7e62