Enabled help for filter and group-by legends.

assets/stylesheets/help.css

@@ -37,3 +37,19 @@
 	margin-top: -300px;
 	margin-left: -475px;
 }
+
+.filter-legend-icon {
+
+}
+
+.filter-legend-tip {
+  margin-left: 10px;
+}
+
+.group_by-legend-icon {
+
+}
+
+.group_by-legend-tip {
+  margin-left: 10px;
+}

lib/widget/settings/fieldset.rb

@@ -7,8 +7,14 @@ class Widget::Settings::Fieldset < Widget::Base
   end
 
   def render
+    hash = self.hash
     content_tag :fieldset, :id => @id, :class => "collapsible collapsed" do
-      html = content_tag :legend, l(@label), :onclick => "toggleFieldset(this);" #FIXME: onclick
+      content = maybe_with_help l(@label),
+        :show_at_id => hash.to_s,
+        :icon => { :class => "#{@type}-legend-icon" },
+        :tooltip => { :class => "#{@type}-legend-tip" }
+      html = content_tag :legend, content,
+        {:onclick => "toggleFieldset(this);", :id => hash.to_s}, false #FIXME: onclick
       html + yield
     end
   end