Device protocol delete not working + protocol add adding the same protocol

[dpap]

@cskiraly api/protocols/delete + api/protocols/add not working properly.

@cskiraly I am trying to understand the difference between the "Protocols" list and the "Devices" list
Currently the comparison on the protocols list is not working so protocols cannot be deleted and the same protocols can be added again.

Also I'm not sure of the functionality. If you delete a protocol should devices belonging to that protocol be visible?

Also in order to handle #73 in a roundabout way can we delete devices if we remove a protocol?

At the moment it seems that devices and protocols are two separate things so if you remove a protocol you can still see devices discovered since the boot of the device