add options for list view

* show the todo user information as username (default), realname or hide it
  username:user|real|none

* show (default) or hide the checkbox
  checkbox:yes|no
add options for list view

* show the todo user information as username (default), realname or hide it
  username:user|real|none

* show (default) or hide the checkbox
  checkbox:yes|no
Update todo.php
Update todo.php
Merge pull request #13 from runout-at/master

add options for list view