IMPROVE. RadRibbonBar - add ability to theme the split button for this control (i.e. SplitButtonInRibbon)

According to the design guidelines, the width of a ContextualTab is determined by the sum of the widths of the RibbonTabs. However, there are cases where the width of the containing tabs is less than the width needed by the ContextualTab to display its text. To handle this case, we should allow the users to set the width of the ContextualTabs.

WORKAROUND: increase the size of the inner tabs:
 private void radButton1_Click(object sender, EventArgs e)
        {
            ribbonTab1.MinSize = new Size(ribbonTab1.Size.Width+60, 0);
            radRibbonBar1.RibbonBarElement.InvalidateMeasure(true);
            radRibbonBar1.RibbonBarElement.UpdateLayout();
            radRibbonBar1.RibbonBarElement.RibbonCaption.CaptionLayout.InvalidateMeasure(true);
            radRibbonBar1.RibbonBarElement.RibbonCaption.CaptionLayout.UpdateLayout();
        }

The new functionality should provide a way to apply an offset to the position of the key tip as well as customize their back and fore colors as well as the font

ADD. RadRibbonBar - add cancelable CommandTabChanging event.
The event is called CommandTabSelecting to be coherent with the older event CommandTabSelected.

With particular cultures the alt key is used for specific symbols and this is why the user should be able to use one of the alt key for symbols and the other one for the key tips.

radRibbonBar1.RibbonBarElement.ApplicationButtonElement.DropDownMenu.FadeAnimationType to be available in properties window.

When the size is reduced the button's text is hidden and the popup occurs. One should be able to directly go to the collapsed mode without showing buttons with no text. 

The attached project shows a temporary solution. 

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