Add list-of-index values as delete option for favourites.

Change-Id: I797d415bb5490e9885fcd63573b9d1ef4745716a

HTML/EN/html/docs/cli-api.html

@@ -9023,9 +9023,12 @@ <h3 id="Favorites">
 		<td>
 			The id of a favorite or level to be deleted. The id represents the hierarchical 
 			structure of the file using a dotted syntax similar to the one used
-			in SNMP, like eg. 2.0.9.3. 
+			in SNMP, like eg. 2.0.9.3.
 			<br>
 			Either this parameter or &quot;url&quot; is mandatory. This takes precedence.
+			<br>
+			If this parameter is a comma-separated list, then each of the items will be deleted
+			and the &quot;url&quot parameter will be ignored.
 		</td>
 	<tr>
 	</tr>

Slim/Plugin/Favorites/Plugin.pm

@@ -916,6 +916,13 @@ sub cliDelete {
 	my $title  = $request->getParam('title');
 
 	my $favs = Slim::Utils::Favorites->new($client);
+
+	if (defined $index && $index =~ /,/) {
+		main::DEBUGLOG && $log->debug("deleting list by index: $index");
+		$favs->deleteIndex($_) foreach sort {$b <=> $a} split(/,/, $index);
+		$request->setStatusDone();
+		return;
+	}
 
 	if (!defined $index || !defined $favs->entry($index)) {
 		if ($url) {