RTL.nl (erroneously?) detects video in sidebar

[joepie91]

As a counterpart to #5950.

When attempting to download an article video, it will grab the 'last news broadcast' from the sidebar. This seems like an edge case that you'd rarely want, aside from when attempting to download the frontpage or such.

Should this video element be ignored on article pages, perhaps?

Output:

sven@linux-etoq:~/archive> youtube-dl -v http://www.rtlnieuws.nl/nieuws/binnenland/niels-ik-wilde-geen-meisje-meer-zijn
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.rtlnieuws.nl/nieuws/binnenland/niels-ik-wilde-geen-meisje-meer-zijn']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.05.20
[debug] Python version 2.7.6 - Linux-3.11.10-29-desktop-x86_64-with-SuSE-13.1-x86_64
[debug] exe versions: ffmpeg 2.6.3, ffprobe 2.6.3, rtmpdump 2.4
[debug] Proxy map: {}
[generic] niels-ik-wilde-geen-meisje-meer-zijn: Requesting header
WARNING: Falling back on generic information extractor.
[generic] niels-ik-wilde-geen-meisje-meer-zijn: Downloading webpage
[generic] niels-ik-wilde-geen-meisje-meer-zijn: Extracting information
[download] Downloading playlist: Niels: 'Ik wilde geen meisje meer zijn' | RTL Nieuws
[generic] playlist Niels: 'Ik wilde geen meisje meer zijn' | RTL Nieuws: Collected 1 video ids (downloading 1 of them)
[download] Downloading video 1 of 1
[rtl.nl] 98d26725-40d0-3a47-867b-a5a8b31eadf3: Downloading JSON metadata
[rtl.nl] 98d26725-40d0-3a47-867b-a5a8b31eadf3: Downloading m3u8 information
[debug] Invoking downloader on u'http://pg.us.rtl.nl/rtlxl/network/a3m/progressive/components/actueel/rtlnieuws/325546/2015w24/98d26725-40d0-3a47-867b-a5a8b31eadf3.ssm/98d26725-40d0-3a47-867b-a5a8b31eadf3.mp4'
[download] RTL Nieuws - 07_00 uur-98d26725-40d0-3a47-867b-a5a8b31eadf3.mp4 has already been downloaded
[download] 100% of 376.92MiB