Arduino REST Password

[avantassel]

Add a password prompt for Arduino's that have a password set on the REST interface. Should prompt if an Unauthorized error is received when trying to connect and save the password encrypted to be used through out the requests.

[avantassel]

In the setup() on the Sketch server.listenOnLocalhost(); needs to be server.noListenOnLocalhost(); and logic to response to an OPTIONS request needs to be added, to do this we'll need to be able to get the method in the sketch....and I haven't figured that out yet...