Fix flasHLS playback so that LOADED_METADATA handlers called after playerPlay() call
Fix flasHLS playback so that LOADED_METADATA handlers called after playerPlay() call

Previously if a user called seek() in a LOADED_METADATA event handler
playerPlay() would then be called straight after resulting in playback
starting at 0.

clappr/clappr,flavioribeiro/clappr,flavioribeiro/clappr,clappr/clappr,clappr/clappr,flavioribeiro/clappr