add ajax upload attachment.
insert image to editor
main nav hightlight
add note channel
enable/disable comment
tag list page
add SEO title/description
add page cache to layout
add rss cache and blog search ping.
update gems and remove padrino helper hijack
add google cse
blog index
minor update
fix migration bug.
fix will_paginate bug when collection is nil
service control shell script.
minor fix
minor fix