Button "Generate code" was added
Block Diagram View: new Dock for Code Generation added.
Block Diagram View: generation system added (docks and button).
eccept to generate
Merge branch 'generationCodeView' of https://github.com/anastasia143/qreal into GenerateButton

Conflicts:
	plugins/blockDiagram/viewInteraction/viewInteraction.cpp
	plugins/blockDiagram/viewInteraction/viewInteraction.h
division by classes. test version
One button
Text in dockWidget
Bug with code.c fixed. Docks are not moving.