Changes:
- #2212 preview in embed.html for all players
- recompiled avcodec.so with proper glibc
- #3100 handle aspect option for nvenc
- #3222 now server API call will return total_bandwidth only for output bandwidth.
- #3241 fix HTTP 500 when requesting dash segment for segment starting from non-keyframe
- #3285 old api call config_stream_create now will overwrite stream, not update it
- #3352 [UI] don't hide stream while dragging it
- #3367 fix desync when using m4s with bad time on server
- #3369 enhance multiple transcoder startup on slow hardware
- #3371 bypass tokens into DASH manifest
- #3377 save aliaser info to config
- #3378 send unaliased user stream name to session push event and to mysql API
- #3380 fix ac3 in m4s