removed hard-coded help texts and made them configurable

lib/widget/settings.rb

@@ -4,12 +4,12 @@ class Widget::Settings < Widget::Base
       content_tag :div, :id => "query_form_content" do
 
         fieldsets = render_widget Widget::Settings::Fieldset, @query,
-            { :type => "filter", :help_text => :help_filters } do
+            { :type => "filter", :help_text => self.filter_help } do
           render_widget Widget::Filters, @query
         end
 
         fieldsets += render_widget Widget::Settings::Fieldset, @query,
-            { :type => "group_by", :help_text => :help_group_by } do
+            { :type => "group_by", :help_text => self.group_by_help } do
           render_widget Widget::GroupBys, @query
         end
 
@@ -24,4 +24,20 @@ class Widget::Settings < Widget::Base
       end
     end
   end
+
+  def filter_help
+    if help_text.kind_of?(Array)
+      help_text[0]
+    else
+      nil
+    end
+  end
+
+  def group_by_help
+    if help_text.kind_of?(Array)
+      help_text[1]
+    else
+      nil
+    end
+  end
 end