Merge remote-tracking branch 'origin/development' into DF-883_Merge_Lods

Conflicts:
	Tools/ResourceEditor/ResourceEditorQtVS2010.vcxproj.filters
[DF-883] add basic grouping logic
[DF-883] move implementation to command, fix rotation
[DF-883] improvements in command
[DF-883] add scentree files to xcode project
Merge remote-tracking branch 'dava/development' into DF-883_Merge_Lods

Conflicts:
	Sources/Internal/Scene3D/Systems/SoundUpdateSystem.cpp
	Sources/Internal/Scene3D/Systems/SoundUpdateSystem.h
	Sources/Internal/Sound/SoundEvent.h
	Sources/Internal/Sound/SoundEventCategory.h
	Sources/Internal/Sound/VolumeAnimatedObject.cpp
	Sources/Internal/Sound/VolumeAnimatedObject.h
	Tools/ResourceEditor/ResourceEditorQt.xcodeproj/project.pbxproj
[DF_883] try to fix wrong line endings after merge
[DF-883] fix command for signalcommands
Merge pull request #198 from adebt/DF-883_Merge_Lods

[DF-883] merge lods