don't connect QSpingBox valuechanged to edit-stuff, seems that signal is
emited when value is updated from software also (textEdited for text is
emited only when user changes stuff).

show up when filename is send)

that solves 'blank' popups problem

Don't put not translated string in the popup

Remove useless tests

Attempt to fix youtube demux script. I still get connections errors towards youtube but i wanted to commit what i'd already done since i'll be gone for a week.

Passes intf_thread_t* to Notify()
Uses newlines in the popup message

item-change etc. doesn't mix with currently playing item. Ain't so
pretty yet, so take one.

Also don't show same metadata button if not needed.

Hide the qt-adv-option as it is doing nothing

before handshake goes ok

See changeset details for rationale.

([1] VoD RTSP pretends to, but it does not, does it?)