duration and start time check does not take edit list into account and calculates duration/start time only based on sample durations not edit list

[RufaelDev]

duration and start time cross check calculation does not take edit lists into account:

see:

https://dvb-2017-dm.s3.eu-central-1.amazonaws.com/philips.mpd https://dvb-2017-dm.s3.eu-central-1.amazonaws.com/dolby.mpd

the start time of the audio period is zero taking into account the edit list and not -0.021333333333333