Modify default email folder names(.Sent,.Trash,.Drafts) upon mailbox creation

[nameless66]

Hallo,

is it possible to change the names of the default mail folder names upon creation of a mailbox?

e.g.:
"Junk" to "Junk-E-Mail"
"Trash" to "Gelöschte Elemente"

I use roundcube and it creates these folder, but the others were created too.

My Setup:
ispconfig 3.0.4.1
dovecot/postfix
apache2
roundcube instead of squirllmail

I can't find a template in ispconfig-conf for this and I think not dovecot or postfix will create the folders.

Please help me