[DF-860] Fixed bug, when there was no way to get Introspection object from property
[DF-867] Remover GUIState class. Added new icons.
[DF-848] Added custom Button to KeyeadArchi. It will be posible to add new key/value pairs in the future.
[DF-185] Fixed async. bug when timer event fires after initial dialog was destroyed.
[DF-185] Small ui fixes
Merge branch 'development' of https://github.com/dava/dava.framework into development

Conflicts:
	Tools/ResourceEditor/Classes/Qt/DockSceneGraph/GraphItem.cpp
	Tools/ResourceEditor/Classes/Qt/DockSceneGraph/GraphModel.cpp
	Tools/ResourceEditor/Classes/Qt/DockSceneGraph/SceneGraphItem.h
	Tools/ResourceEditor/Classes/Qt/DockSceneGraph/SceneGraphModel.cpp
	Tools/ResourceEditor/Classes/Qt/Main/mainwindow.cpp
	Tools/ResourceEditor/Classes/Qt/Scene/SceneData.cpp