v2.75.rc5

• FEC-8989 - [V2][Youtube] When playing Youtube entry with Autoplay policy the player is stuck with endless spinner
• FEC-7899 - Live without DVR: player displays a black screen instead of a video
• FEC-8987 - One1 Security Review 2019 - simplePhpXMLProxy - white-list ports
• fix: wrong relative fonts path (#3990)
• fix: unmute doesn't get destroyed in playlist player (#3946)
• FEV-288 - last reflection point showed 'undefined' on progress tracking (#3986)
• IVQ-UX Change fonts and sizes (UX team notes)