No matter what LANGUAGE_CHOICE was set to it would always take the en branch.
I revamped it a bit to use a macro to create the language include file name. This required a slight tweak to the RU declaration since it's special-cased in a couple places in code.
This is an attempt to pull my changes from #1222 over.
Here comes a compile-time operation to match the extruder symbols on the
info screen to the set number of extruders in configuration.h.
When only one extruder is selected, the "1" on the symbol will not be
displayed.
Added support to show the filament width on the status line of the
graphic LCD. The status will show for 5 sec and then switch over to
data. Status can be seen by clicking the button.