Redesigned the window to make it look more Mac-like and much smaller by adding a popupbutton at the top to choose the filters and by removing all the expanding stuff

This way adding more uis to different filters is much easier and faster to do.

the vout might still run after the playlist termination, so we don't want to use pl_Yield. Pointed by courmisch, thanks!

resizing which is horrible. Upcomming commit will fix that.

No need for vlc_object_find()

N.B.: I suspect there is a small race condition whereby the callbacks are
invoked while being deleted, but this looks like yet another LibVLC
objects insanity.
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

libvlc_event: Fix a typo in libvlc_event_manager_release(), that result in a double free(). (Issue reported by Rov Juvano).

Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

It is pretty much impossible to receive broadcast SRTP without this.
If/when someone needs to disable this, let me know.

Libproxy can read proxy settings from KDE, GNOME, NetworkManager, or
the environment.
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

Revert "Remove non-sensical connect->listen transition"
This reverts commit e1b14641