Update of Firefly IoT Demo

Added more text to the lcd on the arduino to inform the view that
information is being sent to their email, phone, or website. then a
progress bar appears and loads for about 30 seconds then a message is
displayed saying that the information about firefly was sent.

Also updated the imp device code to better sort the data coming from the
arduino so random values or impossible values are not being passed to
the receiver in a message.