fixes timeline calculations for the case where start of Period is not zero
adds a chart for tracking manifest updates
fixes availability window calculation for SegmentList
fixes presentation to media and media to presentation time conversions
fixes segment generation for SegmentTemplate
fixes actual start time calculation
fixes audio/video stats updates
fixes metrics for 'Manifest update info' chart
fixes ABR issues for multi-period
Merge pull request #213 from MSOpenTech/dynamic-support

Fixes players misinterpretation of Period@start. Adds maniest update chart to index.html