Bug 1101603 - RTL fixes for player.

-Force the player control order to LTR.
-Fix the Player cover in RTL.
-Adjust the progress alignment.
Bug 1101603 - change the rating star order in RTL.
Merge pull request #26362 from hfiguiere/rtl-player-fixes

Bug 1101603 - RTL fixes for player. r=squib