Improve Lifecycle validation messages

Users were getting non clear message when trying to update Lifecycles
without required default configuration.

lib/RT/Lifecycle.pm

@@ -994,8 +994,10 @@ sub ValidateLifecycle {
     # ->{actions} are handled below
     for my $state ( keys %{ $lifecycle->{defaults} || {} } ) {
         my $status = $lifecycle->{defaults}{$state};
-        push @warnings, $current_user->loc( "Nonexistant status [_1] in default states in [_2] lifecycle", lc $status, $name )
-            unless $lifecycle->{canonical_case}{ lc $status };
+        push @warnings, $current_user->loc( "[_1] Lifecycle has no default [_2] config", $name, $state )
+            unless $status;
+        push @warnings, $current_user->loc( "Nonexistant status [_1] in default [_2] in [_3] lifecycle", lc $status, $state, $name )
+            if $status && !$lifecycle->{canonical_case}{ lc $status };
     }
     for my $from ( keys %{ $lifecycle->{transitions} || {} } ) {
         push @warnings, $current_user->loc( "Nonexistant status [_1] in transitions in [_2] lifecycle", lc $from, $name )