AJAXey commenting on notes from the browse page.
Set things up for OAuth to work with AJAX requests.
Clear the textarea after a comment is made successfully.
Show an empty comments block and hide it until a comment is made.
Use hidden class instead of inline style.
Use the comment's html content so that it's properly escaped.
Update the note button state in a consistent manner.
Put the comment button first.
Merge branch 'master' into ajaxy_note_browsing