Fixed file upload
display avatar error fixed

some logic error which make it display the default avatar image.
Remove hidden field in view/blog/view.htm

Aims of this is to prevent someone from posting as another user.

—(controller/blog.php/comment) get the id of the current login user
using
“$this->Auth->user('id'); “
Add captcha for contact us and remove hidden field

— Hidden field contain the receiver mail address. —> this input is copy
to the controllers/contact.php.