Fixed issue #1277 KeyError when no description.

Allows a continue with a warning when an extractor cannot retrieve a description.
added kickstarter IE
Check for both automatic captions and subtitles with options `--write-sub` and `--write-auto-sub` (fixes #1224)
release 2013.09.12
[funnyordie] fix video url extraction
Add Ustream channel support
[canalplust] accept urls that don't include the video id (fixes #1415), extract more info and update test
[youtube] update algo for length 82 (fixes #1416)
[gamespot] Update test video title
Merge pull request #1350 from Jaiz909/description-keyerror-fix

Fixed issue #1277 KeyError when no description.
Merge pull request #1409 from JohnyMoSwag/master (closes #1404)

added kickstarter IE
Merge pull request #1413 from tewe/master

Add Ustream channel support
[ustream] Simplify channel extraction

the ChannelParser has been moved to a new function in utils get_meta_content
Instead of the SocialStreamParser now it uses a regex