v2.55.rc5

• FEC-6550 - Dual video - Unable to switch between Slides and Cameras
• FEC-6520 - Quiz Player Accessibility: 'X' button is presented on 'welcome' screen
• SUP-9095 - Player 2.46 + IE11 + document mode set to IE8 + 'Custom Styles' On = Scrubber is Square (instead of round)
• FEC-6470 - Add length validation to moderation description
• SUP-10592 - Quiz automatically replays after submitting
• Remove dependency from KalturaSupport.json. For DualScreen the plugin will import this as dependency injection via plugin code.
• Remove widevine classic from repo