Added User Guide for the Delete a Stream Feature.

templates/zerver/help/delete-a-stream.md

@@ -0,0 +1,29 @@
+# Delete a stream
+
+In Zulip, most of the stream administration is done on the
+subscription page.  Nevertheless, that is not the case for deleting a
+stream.  Follow this instructions to learn how it is done.
+
+## Locate the administration tab
+
+Only Zulip administrators may delete streams.  To delete a stream,
+click the gear (![cog](/static/images/help/cog.png)) at your top right
+corner.  Select the "Administration" tab.
+
+![Streams Cog](/static/images/help/administration.png)
+
+Once on the administration page, first you should click on the
+**Streams Deletion** tab. Now you should be able to see a list of all the
+streams that can be deleted. Search for the stream you want to delete and
+click the **Delete Stream** button.
+
+![Streams Deletion](/static/images/help/stream-deletion.png)
+
+A confirmation window will appear.
+
+![Streams Deletion Confirmation](/static/images/help/stream-confirm-deletion.png)
+
+Once you are ready to delete your stream, and aware of **all** the
+**consequences**, since this operation is not reversible.  You can
+confirm the deletion of that stream.  Once you click the **Yes, delete
+this stream** button, your stream will be deleted.

templates/zerver/help/index.md

@@ -100,7 +100,7 @@ as a “**realm**”.
 * Message a stream by email
 * Convert a group PM to a private stream (not implemented)
 * Remove someone from a stream
-* Delete a stream (admin only)
+* [Delete a stream (admin only)](/help/delete-a-stream)
 
 ## Notifications