XNAT-4400: Panel element descriptions weren't spawned properly; form panels...

XNAT-4400: Panel element descriptions weren't spawned properly; form panels (panel.form) elements can be extended with the 'element' property (like other elements).

src/main/webapp/scripts/xnat/ui/panel.js

@@ -144,14 +144,14 @@ var XNAT = getObject(XNAT || {});
             ],
 
             // TODO: use opts.element for the panel itself
-            _formPanel = spawn('form.xnat-form-panel.panel.panel-default', {
+            _formPanel = spawn('form.xnat-form-panel.panel.panel-default', extend(true, {
                 id: toDashed(opts.id || opts.element.id || opts.name) + '-panel',
                 name: opts.name,
                 method: opts.method || 'POST',
                 action: opts.action ? XNAT.url.rootUrl(opts.action) : '#!',
                 addClass: opts.classes || '',
                 data: opts.data
-            }, [
+            }, opts.element), [
 
                 (hideHeader ? ['div.hidden'] : ['div.panel-heading', [
                     ['h3.panel-title', opts.title]

src/main/webapp/scripts/xnat/ui/templates.js

@@ -149,7 +149,7 @@ var XNAT = getObject(XNAT);
 
                 (opts.afterElement ? opts.afterElement : []),
 
-                ['div.description', opts.description||'']
+                spawn('div.description', opts.description||'')
 
             )]
         ]);
@@ -288,7 +288,7 @@ var XNAT = getObject(XNAT);
         }
 
         // add the description after the input
-        inner.push(['div.description', opts.description||opts.body||opts.html]);
+        inner.push(spawn('div.description', opts.description||opts.body||opts.html));
 
         return template.panelElement(opts, [
             ['label.element-label|for='+element.id||opts.id, opts.label],