Merge pull request #68 from mbg033/master

Issue #53 (HTML Renderer)
rewrite QWidget to QGraphicsScene
merge
Merge pull request #70 from slima4/master

rewrite QWidget to QGraphics
remove SceneWidget and BoxWidget
rename CGraphicsView to CSceneWidget
test
rewrite CLayerWidget
Merge remote-tracking branch 'upstream/master'
Merge pull request #71 from slima4/master

rewrite SceneWidget and LayerWidget
Fixed Menu on GraphicsItem and added opacity
fixed resize items on SceneWidget
remove debug comments
remove unused code
Merge pull request #72 from slima4/master

fixed menu on SceneWidget, fixed resize
added openGl
fixed resize box in SceneWidget
Merge pull request #73 from slima4/master

added openGL and fixed resize box in SceneWidget
clone WidgetScene
Merge pull request #74 from slima4/master

clone WidgetScene