Disable fast play when casting

Fixes #3178 (closed)

changed milestone to %3.6.x

added Player UI bug labels

requested review from @Skantes

added 8 commits

• 76e48356...349ab460 - 7 commits from branch videolan:master
• c2dd22b6 - Disable fast play when casting

Compare with previous version

enabled an automatic merge when all merge checks for c2dd22b6 pass

merged