Project Title: HomeWork

Renamed controllers, views and models
from Thread to Topic, Comment to Reply.
Please avoid doing multiple select sql statements. I think you can reduce your query to something like this
```php
$row = $db->row('SELECT * FROM users WHERE email = ? OR username = ?', array($this->email, $this->username));
```
also, if you're needing to move you're parameters next line (like in $db->row), it is more readable to do this instead
```php
$row = $db->row(
    'SELECT * FROM users WHERE username = ?',
    array($this->username)
);
```