UBToolWidget.cpp/.h cleaned too.

Import PDF: progress bar is not visible

Impossible to write an ê and an ë using the keyboard

Conflicts:
	src/board/UBBoardController.cpp
	src/board/UBFeaturesController.cpp
	src/domain/UBAbstractWidget.cpp
	src/domain/UBGraphicsWidgetItem.cpp
	src/domain/UBGraphicsWidgetItem.h
	src/domain/UBW3CWidget.cpp
	src/domain/UBW3CWidget.h

Now coping creates a full copy of already created item. Copy has it's own content (like video, audio or folder) and stores original item properties (like locked, pos, size, freezed e.t.c.).