serge import: correctly display report lines with blank keys

Author: iafan

lib/Serge/Command/import.pm

@@ -70,13 +70,14 @@ sub run {
                     $error_totals->{$row_data->{error_status}}++ if $row_data->{error_status};
                     my $severity = $row_data->{severity};
 
-                    if ($row_data->{key} eq '') {
+                    if ($row_data->{error_status} ne '') {
                         $html .= qq|
 <tr class="key status $severity">
     <td colspan="2">$row_data->{error_status}</td>
 </tr>
 |;
                     } else {
+                        my $key = $row_data->{key} ne '' ? $row_data->{key} : qq|<em>Empty key</em>|;
                         my $status = $row_data->{error_status} ne '' ? qq|<span class="status">$row_data->{error_status}</span| : '';
 
                         map {
@@ -87,7 +88,7 @@ sub run {
                         my $class = qq| class="$severity"| if $severity ne '';
                         $html .= qq|
 <tr class="key $severity">
-    <td colspan="2">$row_data->{key}$status</td>
+    <td colspan="2">$key$status</td>
 </tr>
 
 <tr$class>