add card to index and add header

external/integrity/organization/organization.md

+---
+layout: page
+permalink: /external/integrity/organization/
+shortcut: integrity:organization
+redirect_from:
+  - /cards/integrity:organization
+  - /external/cards/integrity:organization
+---
 
 # Organization of folders
 

index.md

@@ -57,7 +57,8 @@ The How-to cards are intended to provide practical guidance in implementing Data
 			<li><a href="external/integrity/encryption/disk">Encrypting the Startup Disk for Your Laptop/Desktop</a></li>
 			<li><a href="external/integrity/encryption/file">Encrypting Files and Folders</a></li>
 			<li><a href="external/integrity/naming">Naming files</a></li>
+			<li><a href="external/integrity/organization">Organization of folders</a></li>
 
 		</ul>
 	</div>
-</div>
+</div>
\ No newline at end of file