add result comparison menu action

scripts/Util.pm

@@ -118,6 +118,8 @@ sub execute_query {
     my $argsstring     = $args->();
     my $filenamestring = $filename->();
 
+    # TODO: Pass the values instead of rewriting db.conf.
+    #       Can also use DBI's database handle directly.
     my $result =
       qx{mariadb --defaults-file=$db_conf $argsstring -e "$querystring"};
     die "Query failed: $?" if $? != 0;