fix mail list not showing receiver bug
refactor the code about new submit
fix a bug about user permission defunct
fix #23, get_user will return a fresh user from database
fix register page bugs and show errors
Merge pull request #25 from dotkrnl/register_error

fix register page bugs and show errors
Merge pull request #24 from dotkrnl/mail_bug

fix mail list not showing receiver bug
use self::DEFUNCT_NO replace hardcode
add user permission edit for admin