* Fix errors inserting into posts view, by removing timestamp field
because cakephp was trying to insert a 0000 datetime, but it already has
a default one
* Also remove extra usage of createdBy field and just use user_id field
for CakePHP's auth user access check
* The user controller was redirecting to /pages/home, so I did a check
if that was happening and had it redirect to home instead
* Add the tinymce module to the posts add form
* Add the publishAt field to the edit form. Also add some comments
* Add a logout link to the posts index page