Improve ScaleWidget mouse dragged fix

The problem was in ofxPiMapper class where mousePressed(x, y, button) was transformed into
onMousePressed(ofMouseEventArgs & args) version. The event type was missing. Added now.

src/Gui/Widgets/ScaleWidget.cpp

@@ -139,9 +139,6 @@ void ScaleWidget::onMouseDragged(ofMouseEventArgs & args){
 		
 		GuiWidgetEvent e;
 		e.args = args;
-		
-		// Make sure that the args type is Dragged
-		e.args.type = e.args.Dragged;
 		ofNotifyEvent(guiWidgetEvent, e, this);
 	}
 }

src/ofxPiMapper.cpp

@@ -31,6 +31,7 @@ void ofxPiMapper::mousePressed(int x, int y, int button){
 	args.x = x;
 	args.y = y;
 	args.button = button;
+	args.type = ofMouseEventArgs::Pressed;
 	_application.onMousePressed(args);
 }
 
@@ -39,6 +40,7 @@ void ofxPiMapper::mouseReleased(int x, int y, int button){
 	args.x = x;
 	args.y = y;
 	args.button = button;
+	args.type = ofMouseEventArgs::Released;
 	_application.onMouseReleased(args);
 }
 
@@ -47,6 +49,7 @@ void ofxPiMapper::mouseDragged(int x, int y, int button){
 	args.x = x;
 	args.y = y;
 	args.button = button;
+	args.type = ofMouseEventArgs::Dragged;
 	_application.onMouseDragged(args);
 }