fix cached widgets

lib/widget/base.rb

@@ -13,7 +13,7 @@ class Widget::Base < Widget
   ##
   # Query whether this widget class should be cached.
   def self.dont_cache?
-    @dont_cache || self == Widget::Base || Widget::Base.dont_cache?
+    @dont_cache or self == Widget::Base && Widget::Base.dont_cache?
   end
 
   def initialize(query)

lib/widget/table.rb

@@ -101,7 +101,8 @@ class Widget::Table < Widget::Base
     if @subject.result.count <= 0
       write(content_tag(:p, l(:label_no_data), :class => "nodata"))
     else
-      render_widget(resolve_table, @subject, @options.reverse_merge(:to => @output))
+      str = render_widget(resolve_table, @subject, @options.reverse_merge(:to => @output))
+      @cache_output.write(str.html_safe) if @cache_output
     end
   end
 end