Add documentation for the podcast search rule

Author: ittner

doc/html/searching_en.html

@@ -143,12 +143,24 @@ <h4>Permanent Searches with Search Folders</h4>
 	<tr><td style="background:#bfb">
 	<b>Podcast included</b>
 	</td><td>
-	<b>Adds</b> all items that contain an enclosure to the search folder.
+	<b>Adds</b> all items that contain a podcast to the search folder. For this rule, podcast is assumed to be any enclosure for an audio file.
 	</td></tr>
 	<!-- ----------------------------------------- -->
 	<tr><td style="background:#fbb">
 	<b>Podcast not included</b>
 	</td><td>
+	<b>Removes</b> all items that do not contain a podcast (i.e. an enclosure for an audio file) from the search folder.
+	</td></tr>
+	<!-- ----------------------------------------- -->
+	<tr><td style="background:#bfb">
+	<b>Enclosure included</b>
+	</td><td>
+	<b>Adds</b> all items that contain an enclosure (for any file type) to the search folder.
+	</td></tr>
+	<!-- ----------------------------------------- -->
+	<tr><td style="background:#fbb">
+	<b>Enclosure not included</b>
+	</td><td>
 	<b>Removes</b> all items that do not contain an enclosure from the search folder.
 	</td></tr>
 	</table>