Fix replication pages to use correct mysql config syntax

As specified by http://dev.mysql.com/doc/refman/5.1/en/replication-options-binary-log.html#option_mysqld_binlog-do-db
The binlog-do-db and binlog-ignore-db do not accept commas for multiple databases.
phpmyadmin however does suggest using commas, which is wrong.
This fix will make sure every database has his own line which is how it should be done.