Force users to change their passwords after the first boot

[Thireus]

• root (/recovery mode) password must be changed (default is set to "root")
• sunny's password must be changed (default is set to "peerbox.me")

[peerchemist]

Fixed. Disabled root user, sunny user forced to change password upon first login.

https://github.com/peerchemist/Peerbox/commit/56c30bb6d417eb7ea3d6376cc5b595042b34a249 https://github.com/peerchemist/Peerbox/commit/909b4cce104b2b6774e8e1933cb510a4e9869d0b

[Thireus]

Awesome! Thank you peerchemist.