Comment 13 for bug 240184

I applied the patch to current trunk and factored some things out. It seems to work for me here, with QWERTZ layout and every key combination working as expected. Still, some testing would be necessary.

on a sidenote, to avoid some hacks, I changed "save_file_as" to Ctrl+A, which removes some ambiguity from our keyboard bindings, as Ctrl+S has one and only one function now. I'll file a new bug report for discussion about this, though.