[vice] Remove extractor

The generic ooyala detection works fine.
[slashdot] Remove extractor

The generic ooyala detection works fine.
Merge remote-tracking branch 'dstftw/download-referer-header' (closes #2628)
add post processor
fix ffmpeg error, if youtube-dl runs more than once with --embed-thumbnail with same video
fix ffmpeg metadatapp
we don't need to run ffmpeg more times
[comedycentral] fix TDS extended interviews

The new website broke the URL format.
Added "playlist" as a valid ID keyword.
Merge remote-tracking branch 'malept/tds-extended-interviews'
[comedycentral] Add a testcase for extended-interviews URLs (#2636)
[ted] Add support for watch/ URLs (Fixes #2637)
release 2014.03.27
[clipsyndicate] Modernize
[urort] Add extractor (Fixes #2634)
release 2014.03.27.1
[urort] Add date
[mooshare] Add support for URLs starting with 'www'
[niconico] Modernize
[appletrailers] Modernize
[ehow] Modernize