[DF-421]

Lock checkbox update
add SpinBox mouse wheel filter
[DF-421] Add limits to TimeLineWidget.
[DF-421] fix life spinbox
[DF-421] Update particle sprite path.
[DF-421] Fix sprite path in particle layer widget. Add tooltip to sprite path in particle layer widget if path width bigger than edit control width
Merge remote-tracking branch 'origin/ParticleEditorQT_Refactoring_SceneGraph' into ParticleEditorQT_Refactoring_SceneGraph
[DF-421] smart show/hide Particle dock
[DF-421] Add timeline ability to take only integer values. Frame over life timeline made integer
[DF-421]
fix double size TimeLineWidget.
update enum declaration
[DF-421] Bugs fixing according to the document sent.
[DF-421] Drag&Drop functionality for the Particle Editor + name for Layer.
[DF-421] Drag&Drop functionality - Particle Editor nodes are now redrawn correctly in SceneGraph when "editor.isSolid" property is changed.
[DF-421] Merge