[nrktv] Recognize tv.nrksuper.no URL
[fc2] Encode the string used for the md5 checksum

In python 3 it must be a bytes object.
[fc2] Recognize urls without language part (reported in #1154)
[vevo] The title in the url is optional (fixes #3020)
release 2014.05.31
release 2014.05.31.1
release 2014.05.31.2
release 2014.05.31.3
release 2014.05.31.4
[mailru] Add support for new mail.ru URL format (Closes #3024)
release 2014.06.02