Incorrect layout when clearing and adding new items with controls in their Page to the BackstageView at run time.

Steps to reproduce.

1. Add a form with a RadRibbonBar 
2. Add a RadCheckBox to the ribbon
3. Set the IsThreeState property of the check box to true
4. Run the project and click through the states of the check box. You will see that the checked and indeterminate states are looking the same way.

To reproduce add ten items to the drop down and on the click event of some of them collapse seven of the items.

BackstageView changes its location when it is opened on a RadRibbonForm and the form gets maximized.

FIX. RadRibbonBar - the items text disappears on minimize and maximize.

FIX. RadRibbonBar - the RightToLeft property of the ribbon itself it not synchronized with the same property of the Popup of the RibbonBarElement

FIX. RadRibbonBar - CommandTabSelected event is fired twice

FIX. RadRibbonBar - when a form with the ribbon bar is constantly resized, the application memory is also contactly increased and never released.
Comment: actually the memory leak occurs because of RasStatusStrip

Setting the Visibility property of QuickAccessToolBar to collapsed results in collapsed RadRibbonBar TitleBar.

When a Backstage View is opened for the first time and the Enter key is pressed, null reference exception is thrown.

Once elements are added to RadRibbonBar and the designer is closed and reopened, elements from RadRibbonBar cannot be selected.

FIX. RadRibbonForm title bar buttons location is misplaced.

The drop down of QuickAccessToolBar does not close when its drop down button is clicked while the drop down is opened

Removing the minimize and maximize buttons when Windows aero effects are enabled is not possible neither through the form properties neither through the ribbon bar element.

Moving a RibbonTab from one RadRibbonBar to another does not correctly place its content items in the destination Ribbon Bar's content panel.

The RadRibbonBar's MDI menu disappears when the control is collapsed to popup and a MDI child is maximized.

RadRibbonBar KeyTips are painted and executed even if the associated item is disabled.