bring back the markdown post feature (after investing some effort to make it work)

include/features.php

@@ -363,6 +363,15 @@ function get_features($filtered = true) {
 
 			t('Post/Comment Tools'),
 
+			[
+				'markdown',        
+				t('Markdown'),					
+				t('Use markdown for editing posts'),
+				false,
+				get_config('feature_lock','markdown'),
+				feature_level('markdown',2),
+			],
+
 			[
 				'commtag',        
 				t('Community Tagging'),