RadRibbonBar, the back stage button in not exposed in style builder.

To reproduce:
- Change the ApplicationMenuStyle to BackstageView.
- Add some tabs with different content.
- Start the application and change the tabs several times, you will notice that the content is not changed.

In RadPanelBar elements (button, progress bar) TextAlignment property should be synchronized with TextPrimitive.TextAlignmet property.

Allow small elements, e.g. RadTrackBarElement or RadProgressBarElement, to be added to RadRibbonBar groups at design-time.

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

In some cases when the ribbon is collapsed and you click on a tab item to display its content in a popup, there is an improper top offset of the content.

If you set the MaximizeBox and MinimizeBox properties to false in RadRibbonForm with AllowAero = true, the maximize and minimize buttons will still appear.

When the AllowAero property of RadRibbonForm is true, the ContextualTabGroups placed on the ribbon bar do not support  HTML-like text formatting.

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

When you set padding to the Backstage View and then undo this by pressing Ctrl+Z, the setting is reset, but the control is not updated.

RadRibbonForm with RadPageView in Backstage view mode. Unexpected menu for adding items in a RadRibbonBar group appears (quite randomly) while clicking on the RadPageView page items.

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

FIX. RadRibbonBar - CommandTabSelected event is fired twice

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

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

To reproduce: Add a RadRibbonBar, set it to backstage view, add a ribbon tab, run the application autohide the content of the tabs, you will notice that 2 pixels are cut off the BackstageView button

To reproduce: Add a RadRibbonBar, add a ribbon tab with some groups and buttons. Run the application, autohide the content of the tabs, minimize the application, maximize it, open the tab the buttons are overlapping each other.

To reproduce:

Add a RadRibbonBar and a RibbonTab.
Add a control to the form (for example a textbox).
Subscribe to its LostFocus event and set the tab's visibility to collapsed in the event handler.
When you start the application click the textbox, then click the tab and you will see that the tab will hide but the content will stay visible.

1. Create a new RadRibbonForm and add some tabs.
2. Set the backstage view mode.
2. Run the application. The application icon will not be visible.

1. Create a new application with RadRibbonForm.
2. Set the ApplicationThemeName to TelerikMetro.
3. Run the application. You will see that the quick access toolbar is visible and there are not items in it.