admin pages update

MYSQL > add column to pages, after protected:
" `active` INT(1) NULL DEFAULT '1',"
added DELETE method for admin/pages & api/pages so that you can now hide
a page (set active=0 to hide, active=1 to show) to effectively delete it
(doesnt actually delete row)
TODO: api returns JSON format messages but admin controller just
disregards and goes back to main list. how to go from action_delete to
action_index and pass messages?