mate-file-manager: Renamed to caja

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
mate-session-manager: Upgraded to 1.7.0

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
mate-themes: Upgraded to 1.7.1

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>