[DF-848] Added ability to set custom qt widget for any property item.
Merge branch 'development' of https://github.com/dava/dava.framework into development

Conflicts:
	Tools/ResourceEditor/ResourceEditorQtVS2010.vcxproj.filters
[DF-818] Add: RenderState introspection
Merge branch 'development' of github.com:dava/dava.framework into development
[DF-845] Added Introspection to FilePath and merged with development.