Add ManageSieve to appdata

appdata/Makefile.am

@@ -1,4 +1,4 @@
-# Copyright 1999-2014 the Claws Mail team.
+# Copyright 1999-2015 the Claws Mail team.
 # This file is part of Claws Mail package, and distributed under the
 # terms of the General Public License version 3 (or later).
 # See COPYING file for license details.
@@ -20,6 +20,7 @@ appdata_in_files = claws-mail.appdata.xml.in \
 	claws-mail-geolocation.metainfo.xml.in \
 	claws-mail-libravatar.metainfo.xml.in \
 	claws-mail-mailmbox.metainfo.xml.in \
+	claws-mail-managesieve.metainfo.xml.in \
 	claws-mail-newmail.metainfo.xml.in \
 	claws-mail-notification.metainfo.xml.in \
 	claws-mail-pdf_viewer.metainfo.xml.in \

appdata/claws-mail-managesieve.metainfo.xml.in

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2015 the Claws Mail team -->
+<component type="addon">
+<id>claws-mail-managesieve</id>
+<extends>claws-mail.desktop</extends>
+<name>ManageSieve</name>
+<_summary>Provides an interface for managing Sieve filters on IMAP servers. Those filters are used for server-side mail filtering.</_summary>
+<url type="homepage">http://claws-mail.org/plugin.php?plugin=managesieve</url>
+<metadata_license>CC0-1.0</metadata_license>
+<project_license>GPL-3.0+</project_license>
+<updatecontact>devel@lists.claws-mail.org</updatecontact>
+</component>