[lang] update of internal addon language files
[lang] update of core language files
[lang] update of skin.confluence language files
Remove videoplayer.useframemtdec setting and make it default
AppMessenger: support for setting volume
AESinkPUSLSE: Use ApplicationMessenger to alter internal volume
AEStreamInfo: Handle sync headers with extension blocks

Fixes passthrough of Dolby TrueHD audio with Atmos.

Behavior based on FFmpeg patch "mlpdec: support major sync headers with
optional extension blocks" by Hendrik Leppkes.
FFmpeg: Temporarily dolby atmos fixed version
Language and Settings: Rename normalizevolumes to maintainoriginalvolume
ActiveAE: Maintain original volume is the inverse of normalizelevels
Maintain original volume: Move it to expert settings and enable it by default
Revert "[python] only add modules listed as dependecy to path"

This reverts commit 8772221e24b8f2651dd6fdc19bea53555e5b1d9b.