[StreamCZ] Add support for stream.cz
[lifenews] Minor improvements
[firsttv] Add support for 1tv.ru videoarchive
[firsttv] Fix video URL regex
[instagram] Modernize
[googleplus] Modernize and simplify
[howcast] Modernize
[breakcom] Modernize
[dotsub] Modernize
[exfm] Modernize
[freesound] Modernize
Merge branch '_stream' of https://github.com/pulpe/youtube-dl into pulpe-_stream
[streamcz] Minor changes
[firsttv] Skip test
[yahoo] use unicode_literals
[xtube] use unicode_literals
[xtube] Fix uploader extraction
[cnn] Add an extractor for blogs (closes #2361)