#67 csv, excel and german languages

[Sereinigg]

when exporting results csv or excel and there are
german letters (ä,ü,...) in the questions, this letters are
substituted by "_" and it is very hard to read this ...
Isa it powssible to change this chars:
ä = ae
ö =oe
ü =ue
ß =ss

[Nobody/Anonymous]

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I got the same error with Chinese Language. Exporting
results in CVS but the .cvs is unreadable !