Qa

• Improve error messages on the frontend.
• Include link to webcast-lite(-qa) if the error returned by the API is a 50x.
• Include Matomo service (requests on the API are not added)
• Add Matomo support on the player
• Use different configuration files for qa/prod for the Paella Player.
• Fix RSS links in the footer
• Only edit the default live stream values on fetch if the event doesn't exist
• Add origin_server to Event model

flask db upgrade

• Add /cdn url on the client to access the webcast using CDN
• Fix notifications API. Now using: HTTP_X_FORWARDED_FOR to get the real request IP
• Do not use hlsLive Paella plugin on VOD.
• Remove domain verification