Add JukeboxIE for jukebox.es

Hello,

i've added a IE for jukebox.es

Test enviroment:
Python 3.3.1

tested videos:
http://www.jukebox.es/kosheen/videoclip,pride,r303r.html (successful)

http://www.jukebox.es/kosheen/videoclip,hungry,lq5fm.html (not available)
http://www.jukebox.es/kosheen/videoclip,slip-and-slide-suicide,qzzv50.html (not available)

http://www.jukebox.es/kosheen/videoclip,hide-u,lq5f3.html (extract YT uloNaUWGP3c)
http://www.jukebox.es/kosheen/videoclip,catch,8suus.html (extract YT 0Gee_QDGKS8)