Allow the video player to work with links with redirection.

Ticket: [BLD-1049](https://edx-wiki.atlassian.net/browse/BLD-1049)
This PR provides possibility for the video player to work with different video formats and adds support of links with redirection (like, http://goo.gl/pxxZrg).

**For testing:**
HTML5 links: 
https://s3.amazonaws.com/edx-course-videos/edx-intro/edX-FA12-cware-1_100.mp4 Chrome, Safari
https://s3.amazonaws.com/edx-course-videos/edx-intro/edX-FA12-cware-1_100.webm Chrome, FF
https://s3.amazonaws.com/edx-course-videos/edx-intro/edX-FA12-cware-1_100.ogv Chrome, FF
http://mastbaumbishop.wikispaces.com/file/view/sample.m4v/77739109/sample.m4v Chrome, Safari
http://download.wavetlan.com/SVV/Media/HTTP/H264/Other_Media/dolphins_1600k.3gp Chrome, Safari
http://www.steppublishers.com/sites/default/files/stepteen1.mov Safari

Correct link with redirection: http://goo.gl/pxxZrg
Incorrect link with redirection: http://goo.gl/U4GXnN

@jmclaus , @auraz please review.