2017-03-03 fix player visible when searching after playing a video (and similar)
(e.g. player has class .off-screen, now limit to .content-alignment, hope that's not too limited)
2017-02-14 fix theater mode and more
2017-02-04 big changes! new youtube layout, this greatly simplifies all, works just like the same for mobile
(there seems to be a problem with a very narrow browser, tell me if you really use that)
2016-11-15 moved mobile player solution to another style, because it doesn't need all the other parts
2016-11-15 add simple solution for player of mobile firefox
2016-10-26 make all elements start at bottom of player, fix thumbnail when unstarted
2016-10-25 fix layers again, adapt to current youtube player
2016-10-21 fix layer
2016-05-04 fix text above video
2016-02-03 fix "Up Next" entries right of the player not clickable (reduce z-index to a minimum of 1)
2016-02-02 fix for new youtube html5 player (player was overlaid by other elements)
2015-05-14 reimplemented for new youtube layout
2014-01-09 match more video urls