[[ Bug 12830 ]] Make sure QT player updates instantly when alwaysBuffer is true
[[ Bug 12830 ]] Added bugfix note
[[ Bug 13119 ]] Added support for rate scrollbar
[[ Bug 13119 ]] Added comments and bugfix note
Merge remote-tracking branch 'panos/bugfix-13119' into bugfix-13119
Merge branch 'bugfix-13119' into develop
Merge remote-tracking branch 'panos/bugfix-12830' into bugfix-12830
Merge branch 'bugfix-12830' into develop