Bugfix/vov 2815

I’ve found some really weird code while looking into this iPhone resizing bug:

```ruby
if ( !(t.isFullScreen || (mejs.MediaFeatures.hasTrueNativeFullScreen && document.webkitIsFullScreen)) ) {
  t.setPlayerSize(t.width, t.height);
}
```

Here’s the thing: `t.setPlayerSize(x,y)`, in effect, starts by setting `t.width = x; t.height = y`. And `t` is the same object in both places. So it’s setting `t.width = t.width; t.height = t.height`, which (because it's a percentage value) causes some rounding-error-single-pixel increase, which resizes the iframe, which triggers resize, lather, rinse, repeat.

So I can see no real value in that block at all. However, to avoid edge case/compatibility/cosmetic issues I haven't foreseen, I propose just neutering the block when it detects itself running in a frame, not removing it altogether.