Updated DE language file
Added missing comments for the admin functions
Release 0.41

added: admin function to remove duplicate submitted forms
added: delete form data record in protocol detail view
added: use protocol_limit in the config.json to change the item limit in
the protocol list, see also <http://yals.de/OQRv0Y> for more
informations
added: admin function to delete unpublished feedbacks (SPAM) and
optional also the associated KIT ID's
fixed: the internal precheck for KIT may fail because it does not use
the custom table prefix if defined
added: admin function to export submitted form data as CSV file
updated info.php