Adding php file managecat.php to manage categories

Signed-off-by: Roshan Bhagat <roshanbhgt@gmail.com>
Updated 22 on September

Signed-off-by: Roshan Bhagat <roshanbhgt@gmail.com>
Latest updated changes
Added the style box shadow in wrapper class.

Signed-off-by: Roshan Bhagat <roshanbhgt@gmail.com>