forms: update WidgetList to use generic widget render() method (#26009)

wcs/qommon/form.py

@@ -1264,11 +1264,10 @@ class WidgetList(quixote.form.widget.WidgetList):
         get_response().add_javascript(['jquery.js', 'widget_list.js'])
 
     def render(self):
+        return render(self)
+
+    def render_content(self):
         r = TemplateIO(html=True)
-        if self.attrs:
-            r += htmltag('div', **self.attrs)
-        r += self.render_title(self.get_title())
-        r += self.render_error(self.get_error())
         add_element_widget = self.get_widget('add_element')
         add_element_widget.render_br = False
         add_element_widget.extra_css_class = 'list-add'
@@ -1277,9 +1276,6 @@ class WidgetList(quixote.form.widget.WidgetList):
                 continue
             r += widget.render()
         r += add_element_widget.render()
-        r += self.render_hint(self.get_hint())
-        if self.attrs:
-            r += htmltext('</div>')
         return r.getvalue()
 
 class WidgetDict(quixote.form.widget.WidgetDict):

wcs/qommon/static/css/qommon.css

@@ -144,6 +144,10 @@ div.widget {
 	clear: both;
 }
 
+form div.widget.SingleSelectWidgetWithOther div.widget {
+	margin-bottom: 0;
+}
+
 input[type="submit"][name="submit"] {
 	font-weight: bold;
 	box-shadow: 1px 0px 5px rgba(0, 0, 0, 0.21);