[youtube] Add support for downloading top lists (fixes #1868)

It needs to know the channel and the title of the list, because the ids change every time you browse the channels and are attached to a 'VISITOR_INFO1_LIVE' cookie.
Clarify --download-archive help (#1757)
Add Windows configuration file locations (#1881)
Correct configuration file locations
[configuration] Undo code breakage
release 2013.12.03
Document disabling proxy (#1882)
Change the ie_name of YoutubeSearchDateIE

It produced a duplicate entry when listing the extractors with '--list-extractors' and generates noise in the commit log when generating the supported sites webpage (like in 09f355f73bf1657ecacfd05eda21d2c4bf1cc4a8)
[xhamster] Change test checksum
[redtube] Fix search for title
[daum] Fix real video ID extraction
Remove the compatibility code used before the new format system was implemented
Move common code for extractors based in MTV services to a new base class

Removes the duplication of the thumbnail extraction code (only MTVIE needs to override it)
Add --load-info option (#972)

It just calls the 'YoutubeDL.process_ie_result' with the dictionary from the json file
Option '--load-info': if the download fails, try extracting the info with the 'webpage_url' field of the info dict

The video url may have expired.
[smotri] Add an extractor for live rtmp broadcasts
[smotri] Fix broadcast ticket regex
[youtube] Resolve URLs in comments
release 2013.12.04
Correct some extractor _VALID_URL regexes