Regarding foundation menu/index localization: Any update regarding this issue?
Don’t really have the bandwidth to debug this. Do you have a clue? Can you set it up on your local system and test?
Time is an issue here too 
I’ll try to find some.
But I think the whole idea to have filenames as article titles is not good for at least two reasons:
a) filenames traditionally have limits on charecter use, sometimes length
b) currently there is enforced first letter capitalization - which is culture specific - it has a very foreign feel at least in Lithuanian language.
Also I don’t think checking out all the files in different language will add to architectural system clarity. For me personally it’s like naming source code variables in native language