User and Authentication Database Schema

## User and Authentication database schema

Put initial user and authentication database schema into the db install files.

```
[2/26/14, 11:17:46 AM] Bob Eagan:
http://symfony.com/doc/current/book/security.html
http://symfony.com/doc/current/components/security/authorization.html
http://framework.zend.com/manual/2.2/en/modules/zend.permissions.acl.intro.html

[2/26/14, 11:18:22 AM] Bob Eagan:
pvt_roles_users:
 - role_id
 - user_id

oauth_tokens:
 - id
 - user_id
 - token
 - ...other oauth-y stuff...

user_roles:
 - id
 - name
 - description

user_tokens:
 - id
 - user_id
 - token
 - type
 - created
 - expires

users:
 - id
 - email
 - password
 - last_login
 - created
 - enabled
```