Fixed various error stopping playback

[ArthurMoore85]

…#20)

• Fixed 'KeyError: "track" ' (AttributeError: 'Webclient' object has no attribute 'get_all_songs' #20 fix)
• Fixed 'get_all_playlist_ids' error (AttributeError: 'Webclient' object has no attribute 'get_all_songs' #20 fix)
• Fixed 'TypeError: list indices must be integers, not str' by adding empty playlist
• Fixed 'KeyError: "name" ' when attempting playback.

Playback now works fine

[ghost]

Good work, but now i got:

Traceback (most recent call last):
  File "./thunner", line 456, in <module>
    main()
  File "./thunner", line 306, in main
    playlists = list_playlists(api,playlist_ids)
  File "./thunner", line 252, in list_playlists
    for name, pids in playlist_ids['user'].iteritems():
TypeError: list indices must be integers, not str

[ArthurMoore85]

Thanks for the feedback, I will check out the TypeError and fix that