Merge remote-tracking branch 'origin/development' into DF-3293_Aggregators_Create_Copy_Defects
Itermediate changes.
[DF-3293] Final changes. Fixed defect with aggregators inside library while platform switch, undo/redo, copy/paste.
Merge remote-tracking branch 'origin/development' into DF-3293_Aggregators_Create_Copy_Defects
[DF-3293] Refactoring after review.
[DF-3293] Changes after review. Not final.
[DF-3293] Final changes.
Merge remote-tracking branch 'origin/development' into DF-3293_Aggregators_Create_Copy_Defects
[DF-3293] Hotfix.
[DF-3293] Fixed review comments.
[DF-3293] Removed unnecessary code.
Merge remote-tracking branch 'origin/development' into DF-3293_Aggregators_Create_Copy_Defects

Conflicts:
	Tools/UIEditor/Classes/Commands/ItemsCommand.cpp
	Tools/UIEditor/Classes/Commands/ItemsCommand.h
	Tools/UIEditor/Classes/Controllers/LibraryController.cpp
	Tools/UIEditor/Classes/Controllers/LibraryController.h
	Tools/UIEditor/Classes/UI/controllist.h
	Tools/UIEditor/Classes/UI/hierarchytreecontrol.cpp
[DF-3293] Small fix.
Merge remote-tracking branch 'origin/DF-3293_Aggregators_Create_Copy_Defects' into development
Merge branch 'development' into wotg_merge