by checking string len we can cache the USB hid mode strings
I guess if the user doesn't have enough glyphs they might still
might not get the whole thing but this appears to work with
50 glyphs and the referenced russian language selected
remove call to GUI_EVENT_ACTIONUPDATE it is now counterproductive
Change-Id: Ica96ed39c7d002fde2d1888e78d2ea18e7c1d61a