[gameone] Add new extractor gameone

Currently only usable for downloading tv episodes residing under
http://www.gameone.de/tv/
[gameone] Added explanation for usage of http://cdn.riptide-mtvn.com/
[gameone] Added extraction of description and fixed failing tests
[gameone] Simplified extraction of description
[gameone] Added extraction of age_limit
[gameone] Added timestamp extraction
[generic] Support data-video-url for YouTube embeds (Fixes #2862)
[adultswim] Add new extractor
[adultswim] Fix tests
[tenplay] Add new extractor
[gameone] Fix indentation and removed unused constants
Added new IE for Grooveshark
Fixed pyflakes and pep8 warnings
Fixed errors found by travisci:

py26: re.split can't take flags. use inline flags or re.compile
py27: info_dict must be serializable. remove request object
py335, py34: no urlparse module. use utils.compat_urlparse
Add a duplicate check to /extractor/common.py playlist_result function
Add a _TEST_
Move duplicate check to generic.py
Added vimple.ru support
removed extra char in regexp
Verified with pep8 and pyflakes