refactoring changes from sequpgrade (endReturn, ...) and some modernizations

seqs/basics/revaliases.cfg.example

@@ -1,5 +1,5 @@
 # sSMTP aliases
-# 
+#
 # Format:	local_account:outgoing_address:mailhub
 #
 # Example: root:your_login@your.domain:mailhub.your.domain[:port]

seqs/basics/ssmtp.cfg.example

@@ -5,7 +5,7 @@
 # Make this empty to disable rewriting.
 root=postmaster
 
-# The place where the mail goes. The actual machine name is required no 
+# The place where the mail goes. The actual machine name is required no
 # MX records are consulted. Commonly mailhosts are named mail.domain.com
 mailhub=host:port
 #AuthUser=