[Feature Request] youtube-dl support

[mbnoimi]

YouTube-Dl is most popular a downloader for youtube.com and many other websites (I use it daily on basis).

I suggest to add it as an item in "Download Manager" list.

P.S. There is a GUI for called youtube-dl-gui I suggest to put it in the consideration.

Thanks or cooperation in advance.

[therube]

(Just to note, also requires Python.)