plugins.itvplayer: Use flash streams for ITV1/ITV4
plugins.itvplayer: Use flash streams for ITV1/ITV4

beardypig/streamlink,streamlink/streamlink,bastimeyer/streamlink,wlerin/streamlink,chhe/streamlink,melmorabity/streamlink,streamlink/streamlink,gravyboat/streamlink,melmorabity/streamlink,wlerin/streamlink,bastimeyer/streamlink,gravyboat/streamlink,chhe/streamlink,beardypig/streamlink