Use different video for the player to avoid the chrome bug

(See #527)
Fixed some issues with the existing caption files
WET theme: Added basic print CSS
Merge pull request #3693 from LaurentGoderre/fix-multimedia-player

More multimedia player fixes
Merge pull request #3696 from pjackson28/themeprintcss

WET theme: Added basic print CSS
Toggle: ensure opened accordion is in view