Demo custom controls for live

[peyoh]

Hello,
timeline bar on demo from current master is completely broken on live profile with timeshiftBufferDepth.
The issue is reproducible.
Do you know this already, or you need a test URL?

BRS/
Peyo

[tdrews]

Live presentations generally require custom UI controls (to display the seekable time-range). We have not implemented these in the demo application yet.