Create initial setup wizard

[dpoulson]

Setup a simple web based wizard for the first install.

This needs to:

• Set password (use same for both user pi access, and AP)
• Set name (of droid, and use as hostname/SSID)
• Select modules (body/dome)
• Select plugins (GPIO, audio, etc.)
• Select type of joystick (None, PS3, PSMove, etc.)
• If PS controller, walk through pairing?

Then reboot to accept changes.