move melted handling to set:

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
use cleanPlaylist where needed

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
don't add playlist id to clips when getting them from melted

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
media.playlist might not be set up, if it's been got from melted

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
fix status sendign

Signed-off-by: Tomas Neme <lacrymology@gmail.com>