v2.60.rc1

• Upgrade hls.js version to 0.7.9
• FEC-6958 - After stop/start of live stream, player sends numerous requests to stats.kaltura.com, causing player to stuck
• SUP-11246 - Secure thumbnail request is redirected to insecure response
• FEC-6795 - Error messages on small players (280x158px, used for the new KMC preview player) do not match the player size