Multimedia: Fixed the Flash loading

-Fixed #3878
Tabs: Fixes media query in small view where it is neither tabs nor accordion
Multimedia: Optimized the player's variables
Merge pull request #3879 from LaurentGoderre/fix-multimedia-flash

Multimedia Fixes
Merge pull request #3902 from pjackson28/fixtabssmallwidth

Tabs: Fixes media query in small view where it is neither tabs nor accordion
Details polyfill: Fixed event handling issue
Merge pull request #3903 from pjackson28/fixdetailsevent

Details polyfill: Fixed event handling issue
Tabs: Cleaned up initial load and focus
Merge pull request #3904 from pjackson28/fixtabsfocus

Tabs: Cleaned up initial load and focus