[arte] Clean up format sorting mess

We now use our standard sorting facilities. As a side effect, it's finally possible to download German videos from French URLs and vice versa.
[utils] Improve update on error message somewhat

We still may want to implement a bulletproof check for the current version, and a better place to add this message so that it works for all kind of other errors too.
release 2014.11.20.1
[mtv] Return a proper playlist result (#4254)
[YoutubeDL] Warn if an extractor returns compat_list
[stanfordoc] Modernize
remove unused imports
[comedycentral] Modernize
[extractor/common] Document _type values (Motivated by #4254)
[vh1] Modernize
[brightcove] Remove the namespace from the BrightcoveExperience html object
[brightcove] Improve error message detection (#4256)
Merge remote-tracking branch 'origin/master'
[blip.tv:user] Modernize and add a test
[YoutubeDL] Support new _type multi_video
Update jsinterp.py

http://s.ytimg.com/yts/jsbin/html5player-zh_HK-vfl1NK6PR/html5player.js 
fix raise ExtractorError
Merge pull request #4261 from tinybug/patch-4

Update jsinterp.py
release 2014.11.21
Remove binary and auto-updating entry point
Remove update functionality