Log Message:
Update to 2015.04.17, provided by Leonardo Taccari in PR 49844.

Changes:
2015.04.17
 [QQMusic] Add new extractor
 [srf] Add new extractor

2015.04.09
 [Gamersyde] Add new extractor
 [RadioJavan] Add new extractor
 Remove check for ssl certs: When it uses a capath instead of a cafile,
  'get_ca_certs' or 'cert_store_stats' only returns certificates already used in
  a connection
 [udn] Add new extractor

2015.04.03
 [Dumpert] Add new extractor (Dutch video site Dumpert)

2015.03.28
 [22tracks] Add new extractor
 [Varzesh3] Add new extractor

2015.03.24
 [safari] Add safaribooksonline extractor
 [pornovoisines] Add extractor
 [MiomioTV] Add new extractor
 [nrk:playlist] Add extractor

2015.03.18
 [ultimedia] Add extractor
 [primesharetv] Add primeshare.tv extractor
 [rtve] Add new extractor for rtve infantil

2015.03.15
 [viewster] Add extractor
 [kanalplay] Add extractor
 [footyroom] Add extractor
 [ssa] Add extractor
 [yamusic] rename to yandexmusic

2015.03.09
 [pladform] Add extractor
 [gazeta] Add new extractor
 [eagleplatform] Add extractor
 [douyutv] Add new extractor
 [playwire] Add extractor

2015.03.03.1
 Make sure netrc works for all extractors with login support

2015.03.03
 [downloader/external] Add support for custom options

2015.02.28
 [thechive] remove in favor of Kaltura
 [oppetarkiv] Add new extractor and merge with svtplay
 [odnoklassniki] Add extractor
 [kaltura] Add new extractor
 [TheChiveIE] added support for thechive.com