Allow "hidden" option to reports config

Netdisco/lib/App/Netdisco/Manual/Configuration.pod

@@ -245,8 +245,9 @@ code or HTML templates. For example:
 
  reports:
    - tag: power_inventory
-     category: Device
      label: 'Power Supply Inventory'
+     category: Device
+     hidden: true
      columns:
        - {name: 'Name'}
        - {ps1_type: 'PS1 Type'}
@@ -293,6 +294,10 @@ Section of the Reports menu where this report will appear. See
 L<WritingPlugins|App::Netdisco::Manual::WritingPlugins> for the full list.
 If not supplied, reports appear in a I<My Reports> category.
 
+=head4 C<hidden> (optional)
+
+Set to true to skip inclusion of this report from the Reports menu.
+
 =head4 C<query_columns> (optional)
 
 If supplying code to munge the data, the columns returned from your database

Netdisco/lib/App/Netdisco/Web/GenericReport.pm

@@ -18,6 +18,7 @@ foreach my $report (@{setting('reports')}) {
     tag => $r,
     label => $report->{label},
     category => ($report->{category} || 'My Reports'),
+    ($report->{hidden} ? (hidden => true) : ()),
     provides_csv => true,
   });