Fixes disappearance of design labels and PageContainer open/new button
Issues: WM-4826
Make sure studio never opens in mobile mode which happens with IE10 on touch screen device; only apps should open with wm.isMobile = true
Fixes DesignWrappers for IE10

IE10 requires inner scrim node that can be shown/hidden; the usual
techniques for the whole designWrapper don't work because it has
to have a background-color or clicks go through the scrim, and
a background color means it has to have an opacity which hides
the design label, and PageContainer Open/New button.