option aliases are not recognized in config files

Author: Alexander Smishlajev

templates/classic/config.ini

@@ -23,12 +23,12 @@ host = localhost
 charset = utf-8
 
 [mailgw]
-email_keep_quoted_text = yes
-email_leave_body_unchanged = no
-mail_default_class = issue
+keep_quoted_text = yes
+leave_body_unchanged = no
+default_class = issue
 
 [nosy]
 messages_to_author = no
-add_author_to_nosy = new
-add_recipients_to_nosy = new
-email_signature_position = bottom
+add_author = new
+add_recipients = new
+signature_position = bottom