Provide a mechanism to edit the 3rd field already available in the device database

[gmarcusm]

Missing feature

Provide a mechanism to add/edit the 3rd field / text field already available in the device database.

Justification

This will allow the 3rd field to be used to display additional information in the device. This makes the field useful to display secret keys and such on the device display.

This is related to https://github.com/mooltipass/minible/issues/241

Workarounds

None available.