[DF-478] Scene Graph refactoring - more cleanup.
[DF-421] add GRID to timeline widget.
[DF-420] Fix dxt converion: blue channal and crashes under  macOS
[DF-421] enable/disable layer check box added.
[DF-48] Add: Postponed nodes deletion, new transform processing
[DF-421] "Life" parameter for the layer just created is set to the emitter's lifetime value.
Merge remote-tracking branch 'origin/ParticleEditorQT' into ParticleEditorQT
[DF-47] Replace of MeshInstanceNode to new render system instance
Merge branch 'feature-new-materials' of github.com:dava/dava.framework into feature-new-materials
[DF-47] Added DeleteSystem to QtFramework. Disabled MeshInstance replacement
[DF-421] hide particle editor dock on start up
[DF-478] SceneGraph refactoring is merged to the ParticlesEditorQT.
[DF-478] SceneGraph refactoring is merged to the ParticlesEditorQT.
[DF-421] fix include path
[DF-487] Fixed sprite rendering when clipping polygon is set. Info: Clipping polygon coordinates must be set in sprite local coordinates.
[DF-420] Implementations of feedback completed
[DF-478] SceneGraph refactoring - logic is moved from SceneData to SceneDataManager.
[DF-420] Update libs and binaries for mac os and libs for ios.
[DF-496] Fixed spelling
[DF-496] Added Getting of internal & external storage pathname