Fix note about video length

Perhaps due to update mentioned at /resources page, the video is 34
minutes long.
Merge pull request #9495 from AloisMahdal/longer_vid

Fix note about video length
Adding v2 task/block iterator and some reorganizing
Fixed 404-link for Michael DeHaan profile page.
Merge pull request #9522 from rndmh3ro/patch-1

Fixed 404-link for Michael DeHaan profile page.