Bug 26618: (QA follow-up) Update messages syntax

As highlighted, we were not using the standard form of message passing
here. This patch updates the template and controller to adopt the more
usual syntax.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

C4/RotatingCollections.pm

@@ -473,7 +473,8 @@ sub TransferCollection {
                     );    # Queue transfer
                     push @{$messages},
                       {
-                        type           => 'enqueu',
+                        type           => 'alert',
+                        code           => 'enqueued',
                         item           => $item_object,
                         found_transfer => $found_transfer
                       };
@@ -492,7 +493,12 @@ sub TransferCollection {
                 }
             }
             elsif ( $_->isa('Koha::Exceptions::Item::Transfer::Limit') ) {
-                push @{$messages}, { type => 'failure', item => $item_object };
+                push @{$messages},
+                  {
+                    type => 'error',
+                    code => 'limits',
+                    item => $item_object
+                  };
             }
             else {
                 $_->rethrow();

koha-tmpl/intranet-tmpl/prog/en/modules/rotating_collections/transferCollection.tt

@@ -21,16 +21,14 @@
 
                 [% IF ( messages ) %]
                     [% FOREACH message IN messages %]
-                        [%- SWITCH message.type -%]
-                            [%- CASE 'failure' %]
-                            <div class="dialog error">
-                                <p>Cannot transfer item [% message.item.itemnumber | html %] due to transfer limits</p>
-                            </div>
-                            [%- CASE 'enqueu' -%]
-                            <div class="dialog message">
-                                <p>Item [% message.item.itemnumber | html %] queued behind [% message.found_transfer.reason | html %] transfer to [% Branches.GetName(message.found_transfer.tobranch) | html %]</p>
-                            </div>
-                       [% END %]
+                        <div class="dialog [% m.type | html %]">
+                        [%- SWITCH message.code -%]
+                        [%- CASE 'limits' %]
+                            <p>Cannot transfer item [% message.item.itemnumber | html %] due to transfer limits</p>
+                        [%- CASE 'enqueued' -%]
+                            <p>Item [% message.item.itemnumber | html %] queued behind [% message.found_transfer.reason | html %] transfer to [% Branches.GetName(message.found_transfer.tobranch) | html %]</p>
+                        [% END %]
+                        </div>
                     [% END %]
                 [% END %]