Add RFID enrollment capability

[DallasEpperson]

Currently we are just scanning an RFID and taking note of the token that comes through, then manually adding the token to the DB. It works, but isn't great, so let's improve that process.

One avenue is to create a scanning station solely for enrolling new RFIDs. When the RFID is scanned at this station, it goes into the DB as "unclaimed." Then on the web side, on a user's "add token" page, any unclaimed RFIDs would be listed in a dropdown. Ideally, there would only be one in the dropdown since you would scan it and claim it pretty much immediately.

[steven6282]

If we can get input from the number pad on the door reader, could probably incorporate that into it. Have it so that a certain sequence with an admin rfid scan goes into "entry" mode, then specify a member id number and scan a rfid to add to that member id.