Fixed (returned back) mouse move events handling for clean scene.

Reworked resizing of items on board. Still have troubles with resizing at BottomRight resizer.

src/board/UBBoardView.cpp

@@ -749,9 +749,6 @@ void UBBoardView::handleItemMousePress(QMouseEvent *event)
 
 void UBBoardView::handleItemMouseMove(QMouseEvent *event)
 {
-    if (!movingItem)
-        return;
-
     // determine item to move (maybee we need to move group of item or his parent.
     movingItem = determineItemToMove(movingItem);
 

src/domain/UBGraphicsDelegateFrame.h

@@ -39,7 +39,7 @@ class UBGraphicsDelegateFrame: public QGraphicsRectItem, public QObject
         virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
         QPointF getFixedPointFromPos();
         QSizeF getResizeVector(qreal moveX, qreal moveY);
-        void resizeDelegate(qreal moveX, qreal moveY);
+        QSizeF resizeDelegate(qreal moveX, qreal moveY);
         virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
         virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
 
@@ -105,6 +105,8 @@ class UBGraphicsDelegateFrame: public QGraphicsRectItem, public QObject
 
         QPointF mStartingPoint;
         QTransform mInitialTransform;
+        QSizeF mOriginalSize;
+        QPointF mFixedPoint;
 
         QGraphicsSvgItem* mBottomRightResizeGripSvgItem;
         QGraphicsSvgItem* mBottomResizeGripSvgItem;