help page: Add help for deletion (#340)

Some people may not realise that they can do this themselves,
and maybe they'll consult the help page before abusing the report
button.

nyaa/templates/help.html

@@ -87,6 +87,14 @@
 	The site uses the <a href="https://www.gravatar.com">Gravatar</a> service for user avatars.
 	Check out <a href="https://www.gravatar.com/support/">Gravatar's help section</a> for more detailed instructions.
 </div>
+
+{{ linkable_header("Deleting Your Torrent", "delete") }}
+<div>
+	If you wish to delete one of your torrents, navigate to the torrent's page,
+	click the Edit (<i class="fa fa-fw fa-pencil"></i>) icon on the top left,
+	scroll down and hit the <button type="button" class="btn btn-xs btn-danger">Delete</button>
+	button.
+</div>
 {# <div class="content">
 	<h1>Help</h1>
 	<p><b>The search engine</b> is located at the top right, and it allows users to search through the torrent titles available on the site. Results matching either word A or B can be included by typing a vertical bar between them (|). Results matching a certain word can be excluded by prefixing that word with a hyphen-minus (-). Phrases can be matched by surrounding them with double-quotes (). Search results can be filtered by category, remake, trusted, and/or A+ status, and then narrowed down further by age and size ranges as well as excluding specific users. Sorting can be done in ascending or descending order by date, amount of seeders/leechers/downloads, size, or name. The search engine adapts to the current view and makes it possible to search for specific torrents in a specific subcategory from a specific user.</p>